Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, ho chieu
trinh cua » tinh cua, trinh luat, trinh quan
cong cong » cong dong, trong cong, dung cong
van chat » cao chat
van than » van thanh, van thang, van tuan

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 - hanh trinh cua cong cong ((van chat) OR (van than)) cau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh trinh cua cong cong ((van chat) or (van than)) cau*.