Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
cong nguon » luong nguon, cong nguyen, dung nguon
doi chieu » doc hieu, doi chi, ho chieu
canh manh » lanh manh, cach mang, van manh
nguon van » nguon von, nguoi van, nguyen van
ban cau » bang cau, van cau, ban dau
ban can » ban dan, ban hang, ban hanh

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