Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung lang
theo dieu » theo tieu, theo chieu, thuoc dieu
tranh cua » doanh cua, manh cua
nhung don » nhung van, nhung bo
dung cong » dung trong
san phan » san pham, van phan, sat 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: theo dieu hanh - canh tranh cua ((((nhung cong) OR (nhung don))) or (dung cong)) san phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo dieu hanh - canh tranh cua ((((nhung cong) OR (nhung don))) OR (dung cong)) san phan dau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo dieu hanh - canh tranh cua ((((nhung cong) OR (nhung don))) or (dung cong)) san phan dau*".