Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
nhung don » nhung van, nhung bo
dung cong » dung trong
manh toan » thanh toan, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - hanh tang luan ((nhung don) or (dung cong)) ((manh toan) OR (tinh toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh tang luan ((nhung don) OR (dung cong)) ((manh toan) OR (tinh toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh tang luan ((nhung don) or (dung cong)) ((manh toan) OR (tinh toan)) ban".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tang luan ((nhung don) or (dung cong)) ((manh toan) OR (tinh toan)) ban*.