Perhaps you should try some spelling variations:
duong cong » dung cong, luong cong, duong trong
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dong cong » dung cong, dang cong, cong cong
doc hieu » toc thieu, hoc thieu, hoc hien
chao chu » cho chu, cua chu, cao cho
van than » van thanh, van thang, van tuan
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (chao chu)) xanh - hanh tranh cua ((dong cong) or (duong cong)) van than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (chao chu)) xanh - hanh tranh cua ((dong cong) OR (duong cong)) van than cap.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (chao chu)) xanh - hanh tranh cua ((dong cong) or (duong cong)) van than cap*.