Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
cong thai » cong hai, hong thai, cong thanh
dang cong » dung cong
thai lua » thai luan, thai luat, thai cua
lua dang » cua dang, lua sang, luan nang
cong tan » cong tac, cong san, cong thanh
tan phi » tac phi, tan phu, toan phai
phi phi » chi phi, phi thi, thi phi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((hieu lang) or (trieu tinh)) - cong thai lua dang cong tan phi phi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (trieu tinh)) - cong thai lua dang cong tan phi phi.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (trieu tinh)) - cong thai lua dang cong tan phi phi*.