Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
thanh tra » thanh hoa
hung cong » nhung cong, hung cuong, phung cong
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
co sach » bo sach, cuon sach, hoc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((co sach) or (chinh sach)) - ((thanh tra) or (thanh toan)) van hung cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((co sach) OR (chinh sach)) - ((thanh tra) OR (thanh toan)) van hung cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: doi ((co sach) or (chinh sach)) - ((thanh tra) or (thanh toan)) van hung cong dan than cao*.