Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
van toan » van tuan, van tan, van thanh
ban hang » ngan hang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - canh tranh cua nhung cong ((van toan) or (ban hang)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh tranh cua nhung cong ((van toan) OR (ban hang)) cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh tranh cua nhung cong ((van toan) or (ban hang)) cau*.