Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
canh manh » lanh manh, canh tranh, cach mang
cua trung » cua truong, xuan trung, cua nhung
manh cua » doanh cua, ban cua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan ban » van ban
toan cao » toan tap

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: doi chieu sach - canh manh cua trung ((cong dan) OR (cong san)) ((toan ban) OR (toan cao))~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh manh cua trung ((cong dan) or (cong san)) ((toan ban) or (toan cao))*.