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 phuong » va thuong, cac phuong
cong tan » cong tac, cong thanh, cong ty
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 phuong ((cong tan) or (cong san)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh hang va phuong ((cong tan) OR (cong san)) phan dau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh hang va phuong ((cong tan) or (cong san)) phan dau*.