Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tran » thanh trang, thanh toan, thanh tra
hieu lang » chieu sang, hieu quang, nhieu tang
tran van » luan van
van nang » van quang, van ban, van dong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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 (hieu lang)) - thanh tran van nang ((cong dan) or (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu lang)) - thanh tran van nang ((cong dan) OR (cong tan)) toan tap.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu lang)) - thanh tran van nang ((cong dan) or (cong tan)) toan tap*.