Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
hanh tranh » canh tranh, hanh trinh, hanh trang
bien tinh » bi tinh, yen tinh, diep tinh
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
van toan » van tuan, van thanh, manh toan
ho bien » pho bien, hoa bien, so bien
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: ho bien tinh - hanh tranh cua ((nhung cong) OR (hang cong)) ((van toan) or (van tan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho bien tinh - hanh tranh cua ((nhung cong) OR (hang cong)) ((van toan) OR (van tan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho bien tinh - hanh tranh cua ((nhung cong) OR (hang cong)) ((van toan) or (van tan)) cao".
• Adding a wildcard symbol may retrieve word variants: ho bien tinh - hanh tranh cua ((nhung cong) OR (hang cong)) ((van toan) or (van tan)) cao*.