Perhaps you should try some spelling variations:
hoan chinh » hanh chinh, hoa hinh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
san chan » san chang, dan chan, san chay
ban hang » ngan hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoan chinh sach - hanh tranh cua dung cong ((san chan) or (ban hang)) doan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoan chinh sach - hanh tranh cua dung cong ((san chan) OR (ban hang)) doan.
• Adding a wildcard symbol may retrieve word variants: hoan chinh sach - hanh tranh cua dung cong ((san chan) or (ban hang)) doan*.