Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung hoc » trung quoc
ho chieu » theo chieu, hoc thieu, doi chieu
trung ha » trung tam, trung cap
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cao » toan ban, toan tap

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