Thanh was born on June 26th, 1946. Thanh's father is Kim and her mother is Hảo Bùi thị. Her paternal grandparents were Hãng and Lê Bùi-thị. She has five brothers and three sisters, named Đạt, Tuệ, Phong, Sơn, Tiến, HIền, Phúc and An. She is the third youngest of the nine children.