Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
theo chua » theo chu, ho chua, cheo cua
chua xang » chua nang, chuc nang, chu bang
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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chua xang - canh tranh luan chung cong ((dan toan) OR (dan than)) ban~".
• Adding a wildcard symbol may retrieve word variants: theo chua xang - canh tranh luan chung cong ((dan toan) OR (dan than)) ban*.