Perhaps you should try some spelling variations:
thanh trung » thanh tung
tong cong » trong cong, cong cong, dung cong
chinh ban » chinh bao, chinh can, chinh ngan
nho hieu » nha hieu, nho sieu, nhu hieu
tam tong » tai tong, tam nong, tam song
cong tac » cong ty
chan cau » phan cau, can cau, chinh cau
ho hieu » ho chieu, hoi hieu, co hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho hieu) OR (nho hieu)) quang - thanh trung tam tong cong tac ((chan cau) or (chinh ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (nho hieu)) quang - thanh trung tam tong cong tac ((chan cau) OR (chinh ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho hieu) OR (nho hieu)) quang - thanh trung tam tong cong tac ((chan cau) or (chinh ban))".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) OR (nho hieu)) quang - thanh trung tam tong cong tac ((chan cau) or (chinh ban))*.