Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh tranh » canh tranh, hanh trinh, hanh trang
chau tinh » cuu tinh, ha tinh, cua tinh
tranh cua » doanh cua, manh cua
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap
a chau » ha chau, lai chau, hat chau

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

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