He led the League for the National Union of Vietnam (Hội Liên hiệp quốc dân Việt Nam/Liên Việt) 1946-1951 and was Chairman of the National Assembly of Vietnam.
Ia memimpin Liga untuk Persatuan Nasional Vietnam (Hội Liên hiệp quốc dân Việt Nam/Liên Việt) 1946-1951 dan merupakan Ketua Majelis Nasional Vietnam.