Thanh was born in 1956. Thanh's father is Sơn and her mother was Dần Phạm. Her paternal grandparents were Thục and Trạch Bùi. She has a brother and a sister, named Hòa and Nhã. She had six half-brothers and two half-sisters, named Thạch, Thịnh, Chính, Quân, Giao, Thư, Tuyết and Thủy.