Perhaps you should try some spelling variations:
nang thuong » hang thuong, nang truong, dang thuong
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
tranh luan » trinh luan, trinh luat, tang luan
doanh luan » doanh nhan
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - canh ((tranh luan) OR (doanh luan)) nang thuong ((dan toan) OR (dan than)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - canh ((tranh luan) or (doanh luan)) nang thuong ((dan toan) OR (dan than)) tap~".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - canh ((tranh luan) or (doanh luan)) nang thuong ((dan toan) OR (dan than)) tap*.