This article investigates the effect of firm size on the performance of Vietnamese private enterprises. Based on the data from the Annual Enterprise Survey from 2009 to 2018, this study uses an ordinary least-squares regression model (OLS) to point out the effects of firm size (growth rate, total assets, and total labor) on the performance of Vietnamese private enterprises in both static and dynamic states. According to the results of the quantitative model, total assets are the biggest factor for determining firm performance, followed by total labor and growth rate. The results highlight the issue in Vietnamese private enterprises development in terms of scale, despite the fact that their number is growing, as the scale of enterprises decreases (the proportion of micro and small enterprises increases, but the proportion of medium and big enterprises decreases). Besides, the disadvantages of scale also negatively affect the development process of Vietnamese private enterprises, including accessing capital, increase in production or productivity, business expansion, and improving competitiveness. AcknowledgmentsThis research is supported by the National Science Project “Development of Private Enterprises in the Southwest Region in the new context” (KHCN-TNB/14-19/X15).

Transport infrastructure plays an important role in promoting the socio-economic development in most countries. In particular, the development of road infrastructure is the basis for promoting enterprises development through expanding market access, lowering logistics cost and inputs cost, etc. The focal point of this paper is to estimate the impact of road infrastructure on firm performance through an empirical research in Cuu Long delta area, Vietnam. By applying the econometric models, the results from this study show that the positive relationship between road infrastructure and firm performance in Cuu Long delta area, and that the level of impact is different across business sectors.