Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
truong cao » truong dai
cuong cong » cong cong, luong cong, duong cong
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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 ((tranh cua) OR (truong cao)) cuong cong tan tran cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh ((tranh cua) or (truong cao)) cuong cong tan tran cau*.