[4][5] In addition to her competitive swimming career, Ánh Viên also serves in the Vietnamese army in the rank of major.

At 16, Ánh Viên was already 1.7 metre tall with long limbs and big feet, considered advantageous attributes of a swimmer.

At the 2014 Asian Games in Incheon, Ánh Viên won the bronze medals in the 200m Backstroke and the 400m Individual Medley event.

Ánh Viên was one of the top swimmers at Sea Games 2015 in Singapore along with native Singaporean Joseph Schooling.

At the 2015 FINA Swimming World Cup in Iraq, Ánh Viên moved into the semifinals in 200m IM but placed 8 in her heat.