Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
canh hang » tranh hang, cang thang, danh thang
va thong » va thuong, va phuong, he thong
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan dau » phan tu, hang dau

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