The southern province of Can Tho-born Vien finished seventh in the 800m freestyle with a time of 8:44.56, while in the 200m medley, Vien ranked sixth with a time of 2:16.36.Earlier, the 19-year-old swimmer won a silver in the women’s 400 medley with a time of 4:39.64.At the 28th Southeast Asian Games in Singapore last June, Vien broke eight records and qualified to compete in four categories at the Brazil Olympics this summer.