During the last 20 years, Vietnam has had a prompt economic development, the people have the trend for emigrating from the rural to urban areas, industrial zones and the trading-service centre where it is essential for labor needs to serve for the industrial and service development in order to look for the better jobs. The wave of emigrants have not only contributed to an increase in population in Ho Chi Minh City (HCMC) and other urban centers in Vietnam, but also augmented a pressure in the infrastructure system and the issues of social life.
