Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
dung cong » dung trong
nhan cach » phan cac
hoc hieu » hoc thieu, hoc hien, doc hieu
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: hoc hieu manh - canh tranh cua ((nhung cong) or (dung cong)) dan ((phan dau) or (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh cua ((nhung cong) OR (dung cong)) dan ((phan dau) OR (nhan cach)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh cua ((nhung cong) or (dung cong)) dan ((phan dau) or (nhan cach))*.