Ambassador Thành presented credentials to the Governor-General of Australia and became Ambassador Extraordinary and Plenipotentiary of the Socialist Republic of Việt Nam to the Commonwealth of Australia on November 27, 2020. He is simultaneously accredited to the Republic of Kiribati, the Republic of Nauru, the Independent State of Papua New Guinea, the Solomon Islands and the Republic of Vanuatu.

As a career diplomat, he had been Ambassador Extraordinary and Plenipotentiary of Việt Nam to the Kingdom of Thailand (March 2013 – June 2017) and Deputy Permanent Representative of Việt Nam to the United Nations, New York (January 2005 – January 2008).

Starting at the Ministry of Foreign Affairs in 1990, Ambassador Thành had been working for, inter alia, the Ministry's Cabinet, the Department of Multilateral Economic Cooperation, the ASEM 2004 and APEC 2017 National Secretariats, and the Department of South-east Asia, South Asia and South Pacific. He had been engaged in various bilateral and multilateral negotiations, including the Bilateral Trade Agreement with the United States, Việt Nam's Accession to the WTO, ASEAN's Free Trade Agreements, Việt Nam – EU Partnership and Cooperation Agreement, EVFTA and TPP. After serving as Deputy Director-General for 12 years, he became Director-General of the Ministry in 2013.

Ambassador Thành pursued under- and post-graduate studies in Việt Nam, Ukraine, Switzerland and Japan. Born in Hà Nội in 1965, he is married with two children.