Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
thanh ban » thanh san, thanh van, thanh bac
cua nhung » va nhung
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh
ban cua » ban quan

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

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