Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung quan » truong quan, trong quan, trung tuan
trung qua » trong qua, trung cua, truong quan
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cau » 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 qua) OR (trung quan)) dung ((cong tan) OR (cong tac)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - thanh ((trung qua) OR (trung quan)) dung ((cong tan) or (cong tac)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh ((trung qua) OR (trung quan)) dung ((cong tan) or (cong tac)) toan cau*.