Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
tranh cac » trinh cac, thanh cac, tranh cai
cac phong » cac phuong, cac chuong, chau phong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
gian cap » gian cac, gian cam, gian cham

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu sang)) - canh tranh cac phong ((cong dan) OR (cong san)) gian cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sang)) - canh tranh cac phong ((cong dan) OR (cong san)) gian cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sang)) - canh tranh cac phong ((cong dan) OR (cong san)) gian cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sang)) - canh tranh cac phong ((cong dan) OR (cong san)) gian cap*.