Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap
cua chu » sua chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chu) or (cua chu)) xanh - hanh tranh cua ((nhung cong) or (dung cong)) van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (cua chu)) xanh - hanh tranh cua ((nhung cong) OR (dung cong)) van toan cao.
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (cua chu)) xanh - hanh tranh cua ((nhung cong) or (dung cong)) van toan cao*.