Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
sat phan » sat nhan, vat phan, xuat phan
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: theo chu xanh - canh tranh cua ((nhung cong) OR (hang cong)) sat phan dau~.
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - canh tranh cua ((nhung cong) or (hang cong)) sat phan dau*.