Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
chiet tach » chieu sach
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
dung cong » dung trong
dan phan » doan phan, dan chan, van phan
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu manh) or (chiet tach)) - canh tranh cua ((nhung cong) or (dung cong)) dan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chiet tach)) - canh tranh cua ((nhung cong) OR (dung cong)) dan phan dau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chiet tach)) - canh tranh cua ((nhung cong) or (dung cong)) dan phan dau*.