Son is the Director of Tinh Than Foundation, an organization that supports micro-credit for the urban poor in the HCMC area. Son started his community work when he participated in health communication activities at the Condom Coffee Shop project in 1996. From 2000 to 2004, Son was trained to work with local people in SEA countries. Returning to Vietnam in 2004, he worked for the Network of HIV/STIs Community Clinics in the Mekong Delta provinces, before devoting his later life to local non-profit community development. Son graduated from the Organizational Management program at AIM Philippines, and in 2021 he obtained the Master of Public Policy from Fulbright University. Son has more than 26 years of strong activity in the NGO sector specializing in supporting non-profit organizations, volunteers and donors to promote sustainable development.