Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh luan » trinh luan, trinh luat, doanh luan
trang nong » trong nong, trang cong, trang vuong
hoc thieu » toc thieu, hoc hien
tang nong » hang nong, tang dong, tang mong
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, doi chieu, mot chieu
toan cao » toan ban, toan tap

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: ((ho chieu) OR (hoc thieu)) sang - hanh tranh luan ((trang nong) OR (tang nong)) manh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) sang - hanh tranh luan ((trang nong) OR (tang nong)) manh toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) sang - hanh tranh luan ((trang nong) OR (tang nong)) manh toan cao*.