Career
He was Minister of Science, Technology and Environment from November 1996 to September 1997. He was born at Hanoi. He was a lecturer at Bắc Thái College of Electrical Engineering from 1968 to 1970, and completed a Doctor of Philosophy in Metallurgy in Czechoslovakia in 1975.
He is fluent in English, Russian and Czechoslovakian.
Khiêm made an official visit to the United States in March 2007, meeting with expatriate Vietnamese and visiting the Consulate General of Vietnam in San Francisco, California. During the visit he stated he would look into the case of imprisoned journalist Nguyễn Vũ Bình following a request from then United States Secretary of State Condoleezza Rice.
Bình was pardoned and released on 8 June 2007.