Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
van chuong » van phong, van duong, van hung
van phung » van phong, van hung, van dung
doc hieu » toc thieu, hoc thieu, hoc hien
ho chieu » theo chieu, hoc thieu, doi chieu
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: ((doc hieu) or (ho chieu)) sach - thanh tran ((van phung) OR (van chuong)) cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (ho chieu)) sach - thanh tran ((van phung) OR (van chuong)) cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (ho chieu)) sach - thanh tran ((van phung) OR (van chuong)) cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (ho chieu)) sach - thanh tran ((van phung) OR (van chuong)) cong dan than cao*.