Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh tranh » canh tranh, hanh trinh, hanh trang
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
hang nong » thang long, han tong
ho hieu » ho chieu, hoi hieu, nho hieu
van van » tan van, san van, van vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - hanh tranh cua ((nhung cong) or (hang nong)) van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh tranh cua ((nhung cong) OR (hang nong)) van van ban.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh tranh cua ((nhung cong) or (hang nong)) van van ban*.