Travel.mapsofworld.com provides information on Vietnam Visa Information

Vietnam Visa Information also lets you know that if there is no Vietnam embassy or Consulate in the country where you belong then it is advisable to get an entry visa on arriving at this country and no tourist visa is required for traveling in Vietnam by citizens of Bulgaria, Cuba, Korea and Romania. Without any tourist visa in Vietnam, the nationals of Malaysia and Thailand can stay in Vietnam for a period of 30 days and nationals of the Philippines can stay for 21 days and no tourist visa is also required for transit passengers continuing their journey within 72 hours but they are supposed to carry a valid return or onward tickets.Vietnam Visa Information also informs the visitors that the following documents are required to obtain a tourist visa in Vietnam: Completed application forms; one passport-size photo; valid passport. Fee which is non-refundable and it is payable by cash or cheque; to have your passport returned by post, the applicants are requested to add £5 and include a stamped self-addressed envelope.

To obtain a tourist visa, the travelers are supposed to have a passport with a validity of at least 6 months. Vietnamese tourist visas remains valid for 1 month from the proposed date of entry and visas can usually be extended for another month at an extra cost in most of the larger towns. Vietnam Visa Information also reveals that a yellow fever vaccination certificate is required from travelers who are over 1 year of age and are arriving at Vietnam within 6 days of visiting infected areas.