Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhieu tang » chieu sang, hieu lang, nhiet nang
nhung bong » nhung cong, nhung bang, nhung chong
hanh bang » anh bang, hanh mang, lanh bang
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang
bang va » hang va, ban va, trang va

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