Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
dung cong » dung trong
tam dung » tam duong, tac dung, tan dung
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chinh sach) or (chiet tach)) - thanh trung tam dung cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chinh sach) OR (chiet tach)) - thanh trung tam dung cong san than cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chinh sach) or (chiet tach)) - thanh trung tam dung cong san than cau*.