Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
thi lieu » tai lieu, thi lien, thi dieu
van toan » van tuan, van tan, van thanh
dan than » dan chan, ban than, van than

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: ((thi lieu) OR (theo chieu)) tinh - hanh tranh cua nhung cong ((van toan) OR (dan than)) cau~.
• Adding a wildcard symbol may retrieve word variants: ((thi lieu) or (theo chieu)) tinh - hanh tranh cua nhung cong ((van toan) or (dan than)) cau*.