Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thanh tran » thanh trang, thanh toan, thanh tra
hung cuong » hung vuong, hong cuong, hung luong
hung cong » nhung cong, phung cong, dung cong
manh toan » thanh toan, anh tuan, tinh toan
tran van » luan van
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chiet tach)) - thanh tran van ((hung cong) OR (hung cuong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - thanh tran van ((hung cong) OR (hung cuong)) manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chiet tach)) - thanh tran van ((hung cong) OR (hung cuong)) manh toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - thanh tran van ((hung cong) OR (hung cuong)) manh toan ban*.