If you hold Myanmar (Burma) passport and want to visit Vietnam for less than 14 days, you do not need to go to Vietnam embassy asking for visas. For more than 14 days, you need to apply a visa.
Here is the embassy address in Myanmar:
Embassy of the Socialist Republic of Vietnam in Yangon, Republic of the Union of Myanmar
Address: No. 28-29, Kyauk Kone Road, Yankin Township, Yangon, Myanmar.
Tel: (+95-1) 856 6076
Fax: (+95-1) 855 0220
Website : https://vnembassy-yangon.mofa.gov.vn
Besides going to embassy/ consulate to apply Vietnam visa, you can also apply for an online visa. It takes a few minutes to complete the online form and you will get the result after 2 working days. It is very simple to do online, instead of taking more time and effort to do it physically. There are two types of Visa online:
1/ Visa On Arrival: You must submit your application online to obtain a visa approval letter before your trip and then collect your visa at the airport in Vietnam.
Visa on arrival is a Vietnam visa:
For more information about Visa On Arrival, click here.
2/ E-Visa (Electronic Visa): You must submit your application through the internet. Obtain your visa electronically after completing the required information, upload a recent photo of the passport.
E-visa is a Vietnam visa:
For more information about E-visa, you can click here.