From the Wikipedia page [1] - there is more information on the Vietnamese Wikipedia page [2].
The National Library of Vietnam is the national library in Vietnam and it is located in Hanoi. It was established by a decree of 29 November 1917 as the central library of Indochina.
It took the successive names of Pierre Pasquier (28 February 1935), Bibliothèque Nationale (National Library, 20 October 1945), Bibliothèque entrale de Hanoï (Central Library of Hanoi, February 1947) before being given its present name 21 November 1958.
The official website is [3] (Vietnamese) and [4] (English), .