Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
chi tach » chiu trach, chiet tach, chi thanh
san phan » san pham, sat phan, dan phan
van phan » van phong, van thanh, luan phan
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi tach - canh tranh cua nhung cong ((san phan) OR (van phan)) cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi tach - canh tranh cua nhung cong ((san phan) OR (van phan)) cac".
• Adding a wildcard symbol may retrieve word variants: doi chi tach - canh tranh cua nhung cong ((san phan) OR (van phan)) cac*.