Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
duong cong » dung cong, luong cong, duong trong
hoc trieu » hoc thieu, hoc tieu, hoc dieu
dong cong » dung cong, dang cong, cong cong
van than » van thanh, van thang, van tuan
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc trieu tinh - canh tranh luan ((dong cong) OR (duong cong)) ((van tan) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc trieu tinh - canh tranh luan ((dong cong) OR (duong cong)) ((van tan) OR (van than)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc trieu tinh - canh tranh luan ((dong cong) OR (duong cong)) ((van tan) or (van than)) cau*".