Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh duong, thanh tung, thanh hung
doi chieu » doc hieu, doi chi, ho chieu
dung vat » dung va, dong vat, dung dat
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, cong dong
toan cao » toan ban, 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 - thanh dung vat dung ((cong dan) OR (huong dan)) toan cao~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh dung vat dung ((cong dan) or (huong dan)) toan cao*.