Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, ho chieu
cua tong » cua cong, cua dong, cua song
cua nong » cua cong, cuu nong, cua dong
cong san » cong tac
san toan » van toan, dan toan, manh toan
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 tong) OR (cua nong)) cong san toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - canh tranh ((cua tong) OR (cua nong)) cong san toan cao*".