Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, nhieu tang
cong thai » cong hai, hong thai, cong tac
sang cong » dang cong, bang cong, hang cong
thanh phi » thanh pho, thanh phan, thanh pham
thai lua » thai luan, thai luat, thai cua
lua sang » luc sang, bua sang, cua sang
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 (cuu tinh)) - cong thai lua sang cong thanh phi phi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((hieu lang) OR (cuu tinh)) - cong thai lua sang cong thanh phi phi.
• Adding a wildcard symbol may retrieve word variants: doi ((hieu lang) or (cuu tinh)) - cong thai lua sang cong thanh phi phi*.