Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trung cap » truong cao, trung tam
ho chinh » hoc chinh, cho chinh, hoa chinh
tran van » luan van
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 - thanh ((trung cap) or (tran van)) nhung cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chinh sach - thanh ((trung cap) OR (tran van)) nhung cong san than cau.
• Adding a wildcard symbol may retrieve word variants: ho chinh sach - thanh ((trung cap) or (tran van)) nhung cong san than cau*.