In the past, Facebook hasn't responded well to the government's requests to remove fan pages that have supported activities against the Vietnamese government.
Secondly, Facebook has allowed accounts to sell and advertise illegal products and services, and to spread false information that defamed organizations, businesses, and individuals. With about 900 servers located in Vietnam, Facebook makes hundreds of millions of USD per year.
In the future, the Ministry of Information and Communication will be blocking payments for illegal advertising activities on Facebook. They will also request Facebook to comply with Vietnamese law./.