Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hanh trang » thanh trung, canh tranh, hanh trinh
duong cong » dung cong, luong cong, duong trong
hoc thieu » toc thieu, hoc hien
trang va » tran van, hang va
va duong » van duong, va tuong, va huong
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac
khan ap » khan cap, han ap, khan dam

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tinh - hanh trang va duong cong san ((than cap) or (khan ap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh trang va duong cong san ((than cap) OR (khan ap)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh trang va duong cong san ((than cap) or (khan ap))*.