Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
tranh cac » trinh cac, thanh cac, tranh cai
cac dang » cao dang, cac dan, cac cong
ngon dan » nguong dan, nguoi dan, ngan danh
ngot dan » nguoi dan, ngoc dang, nghe dan
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: doi ((chieu xanh) OR (chieu sach)) - canh tranh cac dang ((ngon dan) OR (ngot dan)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chieu sach)) - canh tranh cac dang ((ngon dan) OR (ngot dan)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu sach)) - canh tranh cac dang ((ngon dan) OR (ngot dan)) toan cau*.