- 1960 - 1962:

Joined the students' movement in Ben Tre Province

- 1962 - 1975:

Worked in propanda and education department of Ben Tre Province

- 1975 - 1982:

Member of the Province Committee, Deputy Head of propaganda and education department of Ben Tre Province

- 1982 - 1986:

Member of Standing Committee of Ben Tre Province, Secretary of Giong Tom District, Ben Tre Province

- 1986 - 1991:

Alternate member of the Central Party Committee, Chairman of Ben Tre's People's Committee

- 1991 - 1996:

Member of the Central Party Committee, Member of Control Commission of the CPV

- 1996 - 4/2001:

Member of the Central Party Committee, Head of Internal Politic Protection Commission of the CPV, Secretary of the Party Committee of Dong Thap Province

- 5/2001- 6/2006:

Member of the Secretariat of the CPV, Head of the Commission for Internal Affairs of the CVP

- 4/2006:

Member of the Politburo

- 6/2006 - now:

Deputy Prime Minister