Perhaps you should try some spelling variations:
trinh quang » tinh quang, trinh quan, tranh quang
chieu sach » chinh sach, chiet tach, chieu sang
trinh qua » trinh quan, trinh cua, trinh luat
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong tan, huong dan, cong dong
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 qua) OR (trinh quang)) nhung ((cong dan) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh qua) OR (trinh quang)) nhung ((cong dan) OR (cong san)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trinh qua) OR (trinh quang)) nhung ((cong dan) or (cong san)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh qua) OR (trinh quang)) nhung ((cong dan) or (cong san)) toan ban*.