Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
canh manh » lanh manh, canh tranh, cach mang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan tap » toan ban
manh va » hanh va, anh va, minh va
va dung » van dung, va duong, vat dung

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 - canh manh va dung ((cong dan) OR (cong san)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - canh manh va dung ((cong dan) OR (cong san)) toan tap".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh manh va dung ((cong dan) OR (cong san)) toan tap*.