Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dang nong » dang cong, hang nong, tang nong
manh toan » thanh toan, anh tuan, tinh toan
thao cua » thai cua, than cua, tho cua
cua sinh » hoa sinh, va sinh
cua dang » cua cong, cua ban
dan toan » van toan, dan than, xuan toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: thao cua sinh - hanh tranh cua dang nong ((dan toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thao cua sinh - hanh tranh cua dang nong ((dan toan) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: thao cua sinh - hanh tranh cua dang nong ((dan toan) or (manh toan)) cau*.