Website listings of interest to users in Vietnam. Browse top quality websites in this TopWeb.Directory category. Vietnam is a country in Southeast Asia with the capital at Hanoi. The country surface is: 331,210 sq km. Border countries and border surface: Cambodia 1,228 km, China 1,281 km, Laos 2,130 km. Languages: Vietnamese (official), English (increasingly favored as a second language), some French, Chinese, and Khmer, mountain area languages (Mon-Khmer and Malayo-Polynesian).