Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
chau tinh » cuu tinh, ha tinh, cua tinh
hanh dung » thanh dung, anh dung, hanh dong
cua nhung » va nhung
dung cua » dung luan, dung cho
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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 (chau tinh)) - hanh dung cua nhung cong ((dan than) OR (ban than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chau tinh)) - hanh dung cua nhung cong ((dan than) OR (ban than)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chau tinh)) - hanh dung cua nhung cong ((dan than) OR (ban than)) tap".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chau tinh)) - hanh dung cua nhung cong ((dan than) OR (ban than)) tap*.