Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dang cong » dung cong
chao chu » cho chu, cua chu, cao cho
chu xanh » chu manh, chieu xanh, chua xang
van quan » van ban
quan cao » quang cao, quan cau, quan ao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: chao chu xanh - hanh tranh cua ((nhung cong) OR (dang cong)) van quan cao~.
• Adding a wildcard symbol may retrieve word variants: chao chu xanh - hanh tranh cua ((nhung cong) or (dang cong)) van quan cao*.