Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cua » truong quan, truong cao, huong cua
doi chieu » doc hieu, doi chi, ho chieu
truong ca » truong cao, truong va, trong ca
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cau » toan cau, phan cau, than cap

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