Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
cua khong » cua phuong, cua thuong, cua cong
hua khong » hoa khong, hoac khong, phuc khong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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 khong) OR (hua khong)) cong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - canh tranh ((cua khong) OR (hua khong)) cong san toan ban*".