Perhaps you should try some spelling variations:
thang cong » thanh cong, thang long, thong cong
thanh chau » thanh cha, thanh cham, thanh chu
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
cong chuc » cong thuc, cong cu, cong cua
van thanh » ban thanh, van tuan
cong cau » cong cu, thong cau, cong tac
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - thanh ((cong cau) or (cong chuc)) thang cong van thanh chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - thanh ((cong cau) OR (cong chuc)) thang cong van thanh chau*.