Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoc hieu » hoc hien, doc hieu, hoc dieu
tan than » tan thanh, tan tran, tam than
ban than » ban thanh, van thanh, ban hang

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: ((hoc hieu) OR (hoc thieu)) manh - canh tranh cua nhung cong ((tan than) OR (ban than)) cao~.
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (hoc thieu)) manh - canh tranh cua nhung cong ((tan than) or (ban than)) cao*.