Perhaps you should try some spelling variations:
thanh tung » thanh cong
cua thuong » cua truong, cua phuong, cua huong
hieu lang » chieu sang, hieu quang, nhieu tang
ca thuong » cao thuong, va thuong, cp thuong
hoi hieu » hoi phieu, hoi tieu, moi hieu
cong san » cong tac
phan dau » phan tu, hang dau
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - thanh tung ((cua thuong) OR (ca thuong)) cong san ((phan dau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - thanh tung ((cua thuong) OR (ca thuong)) cong san ((phan dau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi hieu lang - thanh tung ((cua thuong) OR (ca thuong)) cong san ((phan dau) or (than cap))".
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - thanh tung ((cua thuong) OR (ca thuong)) cong san ((phan dau) or (than cap))*.