Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
trung cua » truong cua, trung tuan, trung cap
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan tap
toan ban » van ban

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 cua cong ((cong dan) OR (cong tan)) ((toan cao) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - thanh trung cua cong ((cong dan) or (cong tan)) ((toan cao) or (toan ban))*.