Nguyễn Thị Hiền Thục (born 13 May 1981), stage name Hien Thuc, is a contemporary Vietnamese pop singer.

Being the youngest child and exposing her interest in singing, despite family difficulty, her parents sent her to District 1's Children Culture House under the instruction of teacher Le Vinh Phuc.

Due to her crystal and innocent voice alongside the confidence of a little girl, she was chosen to be a member of Son Ca team, that later she often had the chance to performance and became well liked by other children.

With the foundation from early age and impressive performing style, she was expected to be one of the top pop singers of Ho Chi Minh City.

[4] Bearing simple and soft music, feminine voice with little technique, Moc marked her maturity in image and vocal emotion of hers.

Diamond included ballad songs from composers like Bao Chan, Ngoc Chau, Tran Thanh Son, Tang Nhat Tue, which was rated to be a successful mix of art and entertainment.

She was motivated to produce Trinh's music when the song Con Tuoi Nao Cho Em in Moc album was highly complimented.

[6][7] She used to be starred in two TV dramas O Tro Trong Nha Minh and Lay Vo Sai Gon and also a host of Bai Hat Viet show.

From 2010 and furthermore, her name was tied with a series of pop songs such as Mo Mot Hanh Phuc, Nhu Van Con Day, Giac Mo Ngay Xua, Yeu Dau Theo Gio Bay, Dieu Em Lo So,...[3] She doesn't pursue only one music genre as she wanted to achieve multi-genre singer.

In 2011, she released the album Thiên Sứ as being ordered from Viet Tan Studio, which consisted love songs of Trinh Cong Son after the sudden success of Portrait 17.

Thien Su was the third album that she cooperated with famous producer and guitarist from Ha Noi - Thanh Phuong, like Moc and Diamond.

A feminine version of Hien Thuc based on the raw guitar playing of Thanh Phuong, among them were pop remixes from the production of Huyen Trung.

The music video which was portrayed by sand animation of Nguyen Van Chung himself and most lyrics was like from the diary of the mother-to-be until her child grows up drew much attention and many views on social media, and gained sympathy from the listeners.

In April 2013, she released the album Tằm Tháng Năm including unique and modern remixes of ballad and folk songs.

On March 1, 2014, she held first ever live show of her career after 25 years as this was a part of Dấu Ấn concert produced by VTV in cooperate with Thanh Nien Media.

Besides music, the live show also addressed her love and relationship with family, teachers, friends, colleagues and her members from The Voice Kid Vietnam.

[13] In 2002, as her career was progressing, she suddenly announced her upcoming marriage with Tuấn Thăng, the leader and drummer of famous Sai Gon Boys band in the 1990s after a two-year relationship.

Beside being resemble with K-pop Queen Lee Hyo-ri, she was suspected to plagiarism the song Only One of BoA which was released as "Yeu Dau Theo Gio Bay" in 2013.

The conflict was officially clarified as her manager at that time - Trinh Tu Trung accused Thanh Thao for exclusively buying the copyright of two songs while she had finished recording them and was about to release the album.

[27] In 2009, Hien Thuc performed in the live show of Han Thai Tu which was produced by Music Box Agency of Thanh Thao.