Perhaps you should try some spelling variations:
thanh tung » thanh cong
cua thuong » cua phuong, ca thuong, cua huong
cua truong » cua trung, xuan truong, cac truong
hieu lang » chieu sang, hieu quang, nhieu tang
hoi hieu » hoi phieu, hoi tieu, moi hieu
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu
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 (cua truong)) cong dan ((phan cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - thanh tung ((cua thuong) OR (cua truong)) cong dan ((phan cau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi hieu lang - thanh tung ((cua thuong) OR (cua truong)) cong dan ((phan cau) or (than cap))".
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - thanh tung ((cua thuong) OR (cua truong)) cong dan ((phan cau) or (than cap))*.