Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
trung ha » trung hoc, trung tam, trung cap
trang va » tran van, hang va
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
gian cau » gian chau, gian cac, gian cam

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 - thanh ((trung ha) or (trang va)) nhung ((cong dan) or (cong tan)) gian cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((trung ha) OR (trang va)) nhung ((cong dan) OR (cong tan)) gian cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung ha) or (trang va)) nhung ((cong dan) or (cong tan)) gian cau*.