Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
hang cong » dang cong, hang nong, bang cong
dung cong » dung trong
than ban » thanh ban, than man, nhuan ban
toan ban » van ban

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 tinh chat ((hang cong) or (dung cong)) dan ((than ban) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh tinh chat ((hang cong) OR (dung cong)) dan ((than ban) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh tinh chat ((hang cong) or (dung cong)) dan ((than ban) OR (toan ban))*".