Today the business environment is more severely competitive than in the past. Knowledge in an organization is one of the most important keys to gain competitive advantage in the global dynamic and complex business environment.
There are many foreign invested companies as Taiwanese, Koreans, Japanese, Singaporean as well as Vietnamese companies which are doing business in Vietnam. Sharing knowledge should be considered as one core competency of knowledge management in the companies, which is evaluated as an important key to success. It is important that knowledge sharing be integrated into a business strategy to reach goals such as competitiveness, effectiveness and performance.
The empirical results suggest that investigation of the relationship among interpersonal trust, organizational support, and communication climate, knowledge sharing and individual performance are significant validated.
Finally, the results reveal that the demographic characteristics influences on the five research constructs in the difference type of companies in Vietnam.

Abrams, L. C., Cross, R., Lesser, E., & Levin, D. Z. (2003a). Nurturing interpersonal trust in knowledge-sharing networks. Academy of Management Executive 17(4), 64-77.
Abrams, L. C., Cross, R., Lesser, E., & Levin, D. Z. (2003b). Nurturing interpersonal trust in knowledge-sharing networks. Academy of Management Executive, 17(4), 64-77.
Adner, R., & Zemsky, P. (2006). A demand-base perspective on sustainable competitive advantage. Strategic Management Journal, 27(215-239).
Al-Alawi, A. I., Al-Marzooqi, N. Y., & Mohammed, Y. F. (2007). Organizational culture and knowledge sharing: Critical success factors. Journal of Knowledge Management, 11(2), 22-42.
Albrecht, S., & Travaglione, A. (2003). Trust in public-sector senior management. International Journal of Human Resource Management, 14(1), 76-92.
Ali, I. M., Pascoe, C., & Warne, L. (2002). Interactions of organizational culture and collaboration in working and learning. Educational Technology & Society, 5(2), 60-68.
Ambrosini, V. (2003). Tacit and ambigous resources as sources of competitive advantage. New York: Palgrave Macmillan
Anderson, J. C., & Gerbing, D. W. (1988). Structual modeling in practice: A review and recommended two-step approach. Psychological Bulletin, 103(3), 411-423.
Arbuckle, J. L., & Wothke, W. (1999). Amos 4.0 User's Guide. Chicago, : IL: Small Waters Corporation.
Ardichvili, A., Maurer, M., Li, W., Wentling, T., & Stuedemann, R. (2006). Cultural influences on knowledge sharing through online communities of practice. Journal of Knowledge Management, 10(1), 94-107.
Ardichvili, A., Page, V., & Wentling, L. (2003). Motivation and barriers to participation in virtual knowledge sharing communities of practice. Journal of Business and Psychology, 7(1), 64-77.
Argote, L., Ingram, P., Levine, J. M., & Moreland, R. L. (2000). Knowledge transfer in organizations: Learning from the experience of others. Organizational Behavior and Human Decision Processes, 82(1), 1-8.
Barney, J. B., & Zajac, E. J. (1994). Competitive organizational behavior: Toward an organizationally-based theory of competitive advantage. Strategic Management Journal, 15(1), 5-9.
Bartol, K. M., & Srivastava, A. (2002). Encouraging knowledge sharing: The role of organizational reward systems. Journal of Leadership and Organizational Studies, 9(1), 64-77.
Bierly, P., & Chakrabarti, A. (1996). Generic knowledge strategies in the U.S. pharmaceutical industry. Strategic Management Journal, 17(10), 123-135.
Blau, P. (1964). Exchange and power in social life. Wiley, New York. New York: This Week’s Citation Classic.
Blazevic, V., Lieven, A., & Klein, E. (2003). Antecedents of project learning and time-to-market during new mobile service development. International Journal of Service Industry Management, 14(1), 120-147.
Bock, G.-W., & Kim, Y.-G. (2002). Breaking the myths of rewards: An exploratory study of attitudes about knowledge sharing. Information Resource Management Journal, 15(2), 14-21.
Bock, G.-W., Zmud, R. W., Kim, Y.-G., & Lee, J.-N. (2005). Behavioral intention formation in knowledge sharing: Examining the roles of extrinsic motivators, social-psychological factors, and organizational climate. MIS Quarterly, 29(1), 87-111.
Bonner, D. (2000). The knowledge management challenge: new roles and responsibilities for chief knowledge officers and chief learning officers and chief learning officers. Alexandria, USA.
Buchholz, W. J. (2001). Open Communication Climate. Massachusetts.
Chang, C.-Y. (2007). China plus one: Japanese investment strategies in Vietnam.
Chen, G., Bliese, P. D., Payne, S. C., Zaccaro, S. J., Webber, S. S., Mathieu, J. E., et al. (2002). Simultaneous examination of the antecedents and consequences of efficacy beliefs at multiple levels of analysis. Human Performance, 15(4), 381-409.
Chua, A. (2003). Knowledge sharing: A game people play. Aslib Proceedings, 55(3), 117-129.
Cohen, S. G., & Bailey, D. E. (1997). What makes teams work: group effectiveness research from the shop floor to the executive suite. Journal of Management, 23(3), 239-290.
Connelly, C. E., & Kelloway, E. K. (2003). Predictors of employees’perceptions of knowledge sharing culture. Leadership and Organizational Development Journal, 24(5), 294-301.
Cox, T. H., Lobel, S. A., & McLeod, P. L. (1991). Effects of ethnic group cultural differences on cooperative and competitive behavior on a group task. The Academy of Management Journal, 34(4), 827-847.
Currall, S. C., & Judge, T. A. (1995). Measuring trust between organizational boundary role persons. Organizational Behavior and Human Decision Processes, 64(2), 151-170.
Darroch, J., & McNaughton, R. (2002). Examining the link between knowledge management practices and type of innovation. Journal of Intellectual Capital 3(3), 210-222.
Darroch, J., & McNaughton, R. (2002). Examining the link between knowledge management practices and types of innovation. Journal of Intellectual Capital, 3(3), 210-222.
Davenport, T. H., & Prusak, L. (1998). Working knowledge: How organizations manage what they know. Paper presented at the Organizational Change Program for the CGIAR Centers.
Davis, K. (1968). Success of China-of-command oral communication in a manufacturing management group. Academy of Management Journal, 11(4), 379-387.
Debowski, S. (2006). Knowledge management. McDougall Street, Milton Qld: John Wiley & Sons Australia, Ltd.
Dewett, T., & Jones, G. (2001). The role of information technology in organization: A review, model, and assessment. Journal of Management, 27(3), 313-346.
Dirks, K. T., & Ferrin, D. L. (2001). The role of trust in organisational settings. Organization Science, 12(4), 450-467.
Earley, P. C. (1986). Trust, perceived importance of praise and criticism, and work performance: An examination of feedback in the United States and England. Journal of Management 12(4), 457-473.
Evangelou, C., & Karacapilidis, N. (2005). On the interaction between humans and knowledge management systems: A framework of knowledge sharing catalysts Knowledge Management Research and Practice, 3(4), 253-261.
Ford, D. P., & Chan, Y. E. (2003). Knowledge sharing in a multi-cultural setting: A case study. Knowledge Management Research & Practice, 1(1), 11-27.
Gold, A. H., Malhotra, A., & Segars, A. H. (2001). Knowledge management: An organizational capabilities perspective. Journal of Management Information Systems 18(1), 185-214.
Goldstein, I. L. (1993). Training in organizations. Belmont, CA: Wadswoth.
Gratton, L., & Erickson, T. J. (2007). 8 ways to build collaborative teams. Harvard Business Review, 85(11), 100-109.
Green, K. W., Wu, C., Whitten, D., & Medlin, B. (2006). The impact of strategic human resource management on firm performance and HR professionals' work attitude and work performance. The Internaltional Journal of Human Resource Managament, 17(4), 559-579.
Groth, K. (2005). A framework supporting knowledge sharing in organizations. Paper presented at the Proceedings of I-KNOW, Graz, Autralia.
Gumus, M. (2007). The effect of communication on knowledge sharing in organizations. Journal of Knowledge Management Practice, 8(2), 1-14.
Hai, L. V. (2007). Foreign direct investment in Vietnam. Geneva.
Hair, J. F., Anderson, R. E., Tatham, R. L., & Black, W. C. (1998). Multivariate dada analysis (5 ed. Vol. 5). New York: Prentice Hall.
Hair, J. F., Back, W. C., Babin, B. J., Anderson, J. C., & Tatham, R. L. (2006). Multivariate Data Analysis: New Jersey: Prentice Hall.
Hendriks, P. (1999). Why share knowledge? The influence of ICT on the motivation for knowledge sharing. Knowledge and Process Management, 6(2), 91-100.
Hendriks, P. H. J. (2001). Many rivers to cross: From ICT to knowledge management systems. Journal of Information Technology, 16(2), 57-72.
Hooff, B. V. D., & Ridder, J. A. d. (2003). Knowledge sharing in context: The influence of organizational commitment, communication climate and CMC use on knowledge sharing. Journal of Knowledge Management, 8(6), 117-130.
Husted, K., & Michailova, S. (2002). Diagnosing and fighting knowledge-sharing hostility. Organizational Dynamics, 31(1), 60-73.
Huysman, M., & Wit, D. d. (2002). Knowledge sharing in fractice: Kluwer Academic Publishers.
Inkpen, A. C., & Dinur, A. (1998). Knowledge management process and internaltional joint ventures. Organization Science, 9(4), 454-468.
Ipe, M. (2003). Knowledge sharing in organizations: A conceptual framework. Human Resource Development Review, 2(4), 337-359.
Iske, P., & Boersma, W. (2005). Connected brains: Question and answer systems for knowledge sharing: Concepts, implementation and return on investment. Journal of Knowledge Management, 9(1), 126-145.
Jacobs, E., & Roodt, G. (2007). The development of a knowledge sharing construct to predict turnover intentions. Aslib Proceedings: New Information Perspectives, 59(3), 229-248.
John K, B. (1991). Towards understanding and measuring conditions of trust: Evolution of a conditions of trust inventory. Journal of Management, 17(3), 643-663.
Joreskog, K., & Sorbom, D. (1994). Structural equation modeling with the SIMPLIS command language. Chicago: Scientific Software International
Kaplan, R. S., & Norton, D. P. (2000). Having trouble with your strategy? Then map it. Harvard Business Review, 78(5), 167-176.
Kelloway, E. K., & Barling, J. (2000). Knowledge work as organizational behaviour. International Journal of Management Reviews, 2(3), 287-304.
Koh, J., & Kim, Y. (2004). Knowledge sharing in virtual communities: An e-business perspective. Expert systems with applications. Expert Systems with Applications 26(2), 155-166.
Koufteros, X. A. (1999). Testing a model of pull production: A paradigm for manufacturing research using structural equation modeling. Journal of Operations Management, 17, 467-488.
Kubo, I., Saka, A., & Wilson, M. C. (2001). Behind the scenes of knowledge sharing in a Japanese bank. Human Resource Development International, 4(4), 465-485.
Larsen, S., & Folger, I. S. (1993). Supportive and defensive communication. International Journal of Contemporary Hospitality Management, 5(3), 22-25.
Lee. (1999). Reviews and prospects research on organizational communication. Journal of Chang Jung Studies, 59.
Lee, C. C., & Yang, J. (2000). Knowledge value chain. Journal of Management Development, 19(9), 783-793.
Lee, D.-J., & Ahn, J.-H. (2007). Reward systems for intra-organizational knowledge sharing. European Journal of Operational Research, 180(2), 938-956.
Lee, H., & Choi, B. (2003). Knowledge management enablers, process, and organizational performance: An integrative view and empirical examination. Journal of Management Information Systems, 20(1), 179-128.
Levin, D. Z., & Cross, R. (2004). The streng of weak ties you can trust: The mediating role of trust in effective knowledge transfer. Management Science, 50(11), 1477-1490.
Lin, H.-F. (2006). Impact of organizational support on organizational intention to facilitate knowledge sharing. Knowledge Management Research & Practice, 4, 26-35.
Lin, H.-F., & Lee, G.-G. (2004). Perceptions of senior managers toward knowledge-sharing behaviour. Management Decision, 42(1), 108-125.
Lin, H.-F., & Lee, G.-G. (2006). Effects of socio-technical factors on organizational intention to encourage knowledge sharing. Management Decision, 44(1), 74-88.
Long, D. W. D., & Fahey, L. (2000). Diagnosing cultural barriers to knowledge management. Academy of Management Executive, 14(4), 113-127.
Lucas, L. M. (2005). The impact of trust and reputation on the transfer of best practices. Journal of Knowledge Management, 9(4), 87-101.
MacNeil, C. M. (2003). Line managers: Facilitators of knowledge sharing in teams. Employee Relations, 25(3), 294-307.
Mayer, R. C., & Davis, J. H. (1995). An intergrative model of organizational trust. Academy of Management Review, 20(3), 709-734.
McDermott, R., & O'Dell, C. (2001). Overcoming cultural barriers to sharing knowledge Richard McDermott. Journal of Knowledge Management, 5(1), 76-85.
McEvily, B., Perrone, V., & Zaheer, A. (2003). Trust as an organizing principle. Organization Science, 14(1), 91-103.
McGregor, D. (1967). The professional manager. New York: McGraw-Hill.
Muchinsky, P. M. (1977). An intraorganizational analysis of the Roberts and O'Reilly organizational communication questionnaire. Journal of Applied Psychology, 62(2), 184-188.
Nonaka. (1991). The knowledge-creating company. Harvard Business Review(69), 96-104.
Nonaka, I. (1994). A dynamic theory of organizational knowledge creation. Organizational Science, 5(1), 14-37.
Nonaka, I., & Knonno, N. (1998). The concept of "ba": Building a foundation for knowledge creation. California Management Review, 40(3), 40-54.
Ong, C.-H., Wan, D., & Chng, S.-H. (2003). Factors affecting individual innovation: An examination within a Japanese subsidiary in Singapore. Technovation, 23(7), 617-631.
Pan, S. L., & Scarbrough, H. (1998a). Knowledge sharing at Buckman Laboratories. Journal of Knowledge Management, 2(1), 55-66.
Pan, S. L., & Scarbrough, H. (1998b). A socio-technical view of knowledge sharing at Buckman Laboratories. Journal of Knowledge Management, 2(1), 55-66.
Quinn, J. B., Anderson, P., & Finkelstein, S. (1996). Managing Professional Intellect: How can an organization’s capabilities exceed the sum of its parts. Harvard Business Review, 74(2), 71-80.
Roberts, K. H., & O'Reilly, C. A. (1974). Measuring organizational communication. Journal of Applied Psychology, 59(3), 321-326.
Robinson, S. L. (1996). Trust and breach of the psychological contract. Administrative Science Quarterly, 41(4), 574-599.
Rowley. (2003). Knowledge management: The new librarianship? From custodians of history to gatekeepers to the future. Library Management, 24(8), 433-440.
Rycroft, R. W., & Kash, D. E. (2002). Path dependence in the innovation of complex technologies. Technology Analysis and Strategic Management, 14(1), 21-35.
Saeidaa, S., Nejatib, M., & Nejatic, M. (2003). Measuring knowledge management processes. Paper presented at the Asia Pacific Management Conference XIII.
Saunders, D. (2007). Create an open climate for communication. American Salesman, 52(11), 25-29.
Scholarios, D., & Marks, A. (2004). Work-life balance and the software worker. Human Resource Management Journal, 14(2), 54-74.
Simon, H. (1976). Administrative behavior. New York: The Free Press.
Simonin, B. L. (1997). The importance of collaborative know-how: An empirical test of the learning organization. Academy of Management Journal, 40(5), 1150-1174.
Sveiby, K. E. (1997). The new organization wealth: Management and measuring knowledge-based assets. San Francisco: Berrett-Koehler.
Syed-Ikhsan, S. O. S., & Rowland, F. (2004). Knowledge management in public organizations: A study on the relationship between organizational elements and the performance of knowledge transfer. Journal of Knowledge Management, 8(2), 95-111.
Tan, H., & Tan, C. S. F. (2000). Toward the differentiation of trust in supervisor and trust in organization. 126(2), 241–260. Genetic, Social, and General Psychology Monographs, 126(2), 241-260.
Tanaka, J. S., & Huba, G. J. (1985). A fit index for covariance structure models under arbitrary GLS estimation. British Journal of Mathematical and Statistical Psychology, 42, 233-239.
Taylor, W., & Wight, G. (2004). Organizational readiness for successful knowledge sharing: Challenges for public sector managers. Information Resources Management Journal, 17(2), 22-37.
Taylor, W. A. (2004). Computer-mediated knowledge sharing and individual user differences: An exploratory study. European Journal of Information Systems, 13(1), 52-64.
Templeton, G. F., Lewis, B. R., & Snyder, C. A. (2002). Development of a measure for the organizational learning construct. Journal of Management Information Systems 19(2), 175-218.
Timpe, A. D. (1988). The art and science of business management performance: KEND.
Truch, E. (2004). Knowledge orientation in organizations: Athenaeum Press.
Wagner, C., Cassimjee, N., & Nel, H. (2002). Some key principles in implementing knowledge management: the views of employees in a small software company. Journal of Industrial Psychology, 28(2), 49-54.
Wah, L. (1999). Making knowledge stick. Management Review, 88(5), 24-29.
Whitener, E. M. (2001). Do high commitment human resource practices affect employee commitment: A cross-level analysis using hierarchical linear modelling. Journal of Management, 27, 515-535.
Wiig, K. M. (1999). What future knowledge management users may expect. Journal of Knowledge Management, 3(2), 155-165.
Worldbark report (Publication (2007). Retrieved http://devdata.worldbank.org/external/CPProfile.asp?PTYPE=CP&CCODE=VNM:
Yamane, T. (1973). Statistics: An introductory analysis. . New York: Harper and Row.
Yang, J.-t. (2007). Individual attitudes and organisational knowledge sharing. Tourism Management, 29(2), 345-353.
Zack, M. H. (1999). Developing a knowledge strategy. California Management Review, 141(3), 125-145.
Zarraga, C., & Bonache, J. (2003). Assessing the team environment for knowledge sharing: An empirical analysis. Internatiof Human Resource Management, 14(7), 1227-1245.