Perhaps you should try some spelling variations:
luan trong » quan trong, luat trong, luan tuong
chieu sach » chinh sach, chiet tach, chieu sang
lieu tinh » trieu tinh, diep tinh, bien tinh
tang luan » dung luan
anh tang » anh bang, anh dang, anh nang
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (lieu tinh)) - anh tang luan trong cong ((dan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (lieu tinh)) - anh tang luan trong cong ((dan toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (lieu tinh)) - anh tang luan trong cong ((dan toan) or (dan than)) cau*.