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
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
ho lieu » so lieu, co lieu, ho kieu
co hieu » cao hieu, doc hieu

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 lieu) OR (co hieu)) tinh - hanh tranh cua nhung cong ((dan toan) OR (dan than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho lieu) or (co hieu)) tinh - hanh tranh cua nhung cong ((dan toan) OR (dan than)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho lieu) or (co hieu)) tinh - hanh tranh cua nhung cong ((dan toan) OR (dan than)) cau*.