Perhaps you should try some spelling variations:
chi tach » chiu trach, chiet tach, chi thanh
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cac » nhan cach, phan dau, phan lap
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 dung) OR (cua dong)) cong san phan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi tach - canh tranh ((cua dung) OR (cua dong)) cong san phan cac*".