Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cua » truong ca, truong quan, truong cao
doi chieu » doc hieu, doi chi, ho chieu
trung cua » trung tuan, trung cap, dung cua
cong dan » cong san, cong tan, cong dong
toan cau » toan cao, toan ban, toan tap

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 cua) or (truong cua)) nhung ((cong dan) OR (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((trung cua) OR (truong cua)) nhung ((cong dan) OR (huong dan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((trung cua) or (truong cua)) nhung ((cong dan) OR (huong dan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung cua) or (truong cua)) nhung ((cong dan) OR (huong dan)) toan cau*.