Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doi lieu » duoc lieu, du lieu, tai lieu
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
phan dau » phan tu, hang dau

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: ((doi lieu) OR (doi chieu)) tinh - hanh tranh cua nhung ((cong dan) OR (cong san)) phan dau~.
• Adding a wildcard symbol may retrieve word variants: ((doi lieu) or (doi chieu)) tinh - hanh tranh cua nhung ((cong dan) or (cong san)) phan dau*.