Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tang luan » dung luan
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan tap » toan ban
hang ca » hang va, nang cao, hang tai

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 - hanh ((tang luan) or (hang ca)) nhung ((cong tan) OR (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((tang luan) OR (hang ca)) nhung ((cong tan) OR (cong san)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((tang luan) or (hang ca)) nhung ((cong tan) OR (cong san)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((tang luan) or (hang ca)) nhung ((cong tan) OR (cong san)) toan tap*.