Perhaps you should try some spelling variations:
ncanh tranh » nhanh thanh, can tranh, nganh thanh
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
song cong » cong cong, tong cong, song hong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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

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