Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhan dang » nhan dan, phan dang, tran dang
dang luan » dung luan, tang luan, hang luan
luan cong » luat cong, luong cong, luan chung
cong cong » cong dong, trong cong, dung cong
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
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: doi ((chieu xanh) OR (trieu tinh)) - nhan dang luan cong cong san ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (trieu tinh)) - nhan dang luan cong cong san ((toan cau) OR (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (trieu tinh)) - nhan dang luan cong cong san ((toan cau) OR (toan cao))*.