Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
cho chieu » ho chieu, theo chieu, chon chien
tang luan » dung luan
nang quan » ban quan, nang suat
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan

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

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