Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chiet tach, chieu sang, chieu xanh
van nhung » van nhuong, va nhung, van hung
ban tran » ban trang, tan tran, ban than
tran van » luan van
cong dan » cong san, cong tan, huong dan
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chinh sach)) - ban tran van nhung cong dan ((chan cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - ban tran van nhung cong dan ((chan cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chinh sach)) - ban tran van nhung cong dan ((chan cau) or (phan cau))*.