Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
bang cong » dang cong, bang song, hang cong
hang nong » thang long, han tong
cap sach » cap sac, cau sach, nam sach
cao sach » co sach, ao sach, cau sach
van toan » van tuan, van tan, van thanh
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: theo ((cap sach) or (cao sach)) - canh tranh luan ((bang cong) or (hang nong)) van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((cap sach) OR (cao sach)) - canh tranh luan ((bang cong) OR (hang nong)) van toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((cap sach) or (cao sach)) - canh tranh luan ((bang cong) or (hang nong)) van toan ban*.