Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tran » thanh trang, thanh toan, thanh tra
hung cong » nhung cong, hung cuong, phung cong
chi sach » chinh sach, co sach, moi sach
tran van » luan van
van hung » van dung, manh hung, van duong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, 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: doi ((chi sach) OR (chieu sach)) - thanh tran van hung cong dan than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi sach) OR (chieu sach)) - thanh tran van hung cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chi sach) OR (chieu sach)) - thanh tran van hung cong dan than cao*.