Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh suc » trinh duc, trinh muc, trinh thuc
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trinh su » trinh tu, trinh san, trinh cau
cong san » cong tac
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: ho chieu sach - hanh ((trinh suc) OR (trinh su)) dung cong san ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh suc) OR (trinh su)) dung cong san ((toan tap) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trinh suc) OR (trinh su)) dung cong san ((toan tap) or (toan ban))*".