Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
canh manh » lanh manh, canh tranh, cach mang
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap
manh va » hanh va, anh va, minh va

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

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