Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
truong cao » truong dai
doi chieu » doc hieu, doi chi, ho chieu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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 ((trung tuan) OR (truong cao)) dung ((cong dan) OR (cong tan)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((trung tuan) or (truong cao)) dung ((cong dan) OR (cong tan)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung tuan) or (truong cao)) dung ((cong dan) OR (cong tan)) toan tap*.