Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
tam nhung » tham nhung, cam nhung, nam nhung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van 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 ((hieu lang) or (chinh sach)) - thanh trung tam nhung cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chinh sach)) - thanh trung tam nhung cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chinh sach)) - thanh trung tam nhung cong dan than cau*.