Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
theo kha » theo phap, thao khoa, theo chu
kha nang » phap nang, ky nang, ki nang
dan toan » dan than, manh toan, xuan toan
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan

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: theo kha nang - hanh tranh cua nhung cong ((dan toan) OR (((van toan) OR (van tuan)))) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo kha nang - hanh tranh cua nhung cong ((dan toan) or (((van toan) OR (van tuan)))) cau~".
• Adding a wildcard symbol may retrieve word variants: theo kha nang - hanh tranh cua nhung cong ((dan toan) or (((van toan) OR (van tuan)))) cau*.