Perhaps you should try some spelling variations:
chung cong » nhung cong, chong cong, phung cong
hanh tranh » canh tranh, hanh trinh, hanh trang
khia canh » kho canh, thi canh
tranh cua » doanh cua, manh cua
cua chung » cua nhung, luan chung, luat chung
khi xanh » thi hanh, thi anh, thi oanh
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((khi xanh) or (khia canh)) - hanh tranh cua chung cong ((van toan) OR (van tan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((khi xanh) OR (khia canh)) - hanh tranh cua chung cong ((van toan) OR (van tan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((khi xanh) or (khia canh)) - hanh tranh cua chung cong ((van toan) OR (van tan)) cao".
• Adding a wildcard symbol may retrieve word variants: doi ((khi xanh) or (khia canh)) - hanh tranh cua chung cong ((van toan) OR (van tan)) cao*.