Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh luan » trinh luat, trinh quan, trinh han
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
theo chu » theo chieu, cho chu, chao chu
chu xang » chua xang, chu bang, chuc nang
van toan » van tuan, van tan, van thanh
toan cau » 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: theo chu xang - canh trinh luan ((hang cong) or (dang cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xang - canh trinh luan ((hang cong) OR (dang cong)) van toan cau.
• Adding a wildcard symbol may retrieve word variants: theo chu xang - canh trinh luan ((hang cong) or (dang cong)) van toan cau*.