Perhaps you should try some spelling variations:
trung thanh » truong thanh
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung tam, tran tuan, truong thanh
cong dan » cong san, cong tan, cong dong
than cau » toan cau, phan cau, 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: theo chieu xanh - thanh ((trung tuan) OR (trung thanh)) song ((cong dan) OR (huong dan)) than cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - thanh ((trung tuan) or (trung thanh)) song ((cong dan) OR (huong dan)) than cau~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - thanh ((trung tuan) or (trung thanh)) song ((cong dan) OR (huong dan)) than cau*.