Perhaps you should try some spelling variations:
hanh tang » hanh trang, hanh mang, hanh tung
luan cong » luat cong, luong cong, luan chung
cong cong » cong dong, trong cong, dung cong
nho hieu » nha hieu, nho sieu, nhu hieu
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, than cap
ho hieu » ho chieu, hoi hieu, co hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho hieu) or (nho hieu)) lang - ((hanh tang) or (anh tang)) luan cong cong tan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (nho hieu)) lang - ((hanh tang) OR (anh tang)) luan cong cong tan than cao.
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) or (nho hieu)) lang - ((hanh tang) or (anh tang)) luan cong cong tan than cao*.