Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cao » toan cao, thai cao, than cap

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 xanh - thanh ((trung va) OR (trung ha)) nhung ((cong dan) OR (cong san)) than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - thanh ((trung va) or (trung ha)) nhung ((cong dan) OR (cong san)) than cao~".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh ((trung va) or (trung ha)) nhung ((cong dan) OR (cong san)) than cao*.