Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
truong cao » truong dai
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
trung cap » trung tam
cong ban » cong bang, cong san, cong tan
than cap » khan cap, thanh lap, thanh cac

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