Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh quan » tinh quang, trinh luat, trinh han
trinh van » trinh han, trinh toan, dinh van
dong cong » duong cong, dung cong, dang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
hang dau » hang tai

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh ((trinh van) OR (trinh quan)) dong cong dan ((hang dau) OR (hang va))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - canh ((trinh van) OR (trinh quan)) dong cong dan ((hang dau) or (hang va))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh ((trinh van) OR (trinh quan)) dong cong dan ((hang dau) or (hang va))*.