Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
trinh van » trinh quan, trinh toan, dinh van
trinh han » trinh quan
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan tap » toan 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 - canh ((trinh van) or (trinh han)) hang ((cong dan) or (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh ((trinh van) OR (trinh han)) hang ((cong dan) OR (cong san)) toan tap.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh ((trinh van) or (trinh han)) hang ((cong dan) or (cong san)) toan tap*.