Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
cua dang » cua cong, cua ban
cong van » cong vang, song van, cong tan
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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 tranh cua dang ((cong van) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh tranh cua dang ((cong van) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh tranh cua dang ((cong van) or (cong san)) toan cau*.