Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu lang » chieu sang, hieu quang, nhieu tang
trung cao » truong cao, trung cap, trung co
dong cong » duong cong, dung cong, dang cong
cao dong » cao dang, lao dong, cao cong
cong san » cong tac
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac
ho hieu » ho chieu, hoi hieu, nho 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 lang - thanh trung cao dong cong san ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh trung cao dong cong san ((than cau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh trung cao dong cong san ((than cau) or (than cap))*.