Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thanh chau » thanh cha, thanh cham, thanh chu
hieu lang » chieu sang, hieu quang, nhieu tang
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tan » cong tac, cong san, cong thanh
phan cau » phan dau, phan cac, phan tu
cong va » dong va, cong ha, cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - thanh cong va thuong cong tan ((thanh chau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - thanh cong va thuong cong tan ((thanh chau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - thanh cong va thuong cong tan ((thanh chau) or (phan cau))*.