Perhaps you should try some spelling variations:
nhung dung » phuong dung, ung dung, thong dung
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
manh toan » thanh toan, anh tuan, tinh toan
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
dan toan » van toan, dan than, xuan toan

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - canh tranh cua ((nhung dung) OR (nhung cong)) ((dan toan) OR (manh toan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - canh tranh cua ((nhung dung) or (nhung cong)) ((dan toan) OR (manh toan)) tap~".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - canh tranh cua ((nhung dung) or (nhung cong)) ((dan toan) OR (manh toan)) tap*.