Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hanh trinh » canh tranh, hanh chinh
thanh chau » thanh cha, thanh cham, thanh chu
hoc thieu » toc thieu, hoc hien
trong tan » trong quan, trong cac, trong ca
nhanh cau » nhanh cay, nhanh ha, hang cau
trinh va » trinh van, trinh vat, trinh ve
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh trinh va dung trong tan ((thanh chau) OR (nhanh cau))~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh trinh va dung trong tan ((thanh chau) or (nhanh cau))*.