Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
truong cao » truong dai
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
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: ho chieu sach - thanh ((trung va) or (truong cao)) nhung ((cong ban) OR (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung va) OR (truong cao)) nhung ((cong ban) OR (cong tan)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((trung va) or (truong cao)) nhung ((cong ban) OR (cong tan)) than cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung va) or (truong cao)) nhung ((cong ban) OR (cong tan)) than cau*.