Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chiet » doi chieu, doi viet, doi chinh
tranh cua » doanh cua, manh cua
dung cong » dung trong
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
doi chi » doi khi

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: ((doi chiet) OR (doi chi)) tach - hanh tranh cua ((nhung cong) OR (dung cong)) dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chiet) or (doi chi)) tach - hanh tranh cua ((nhung cong) OR (dung cong)) dan toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((doi chiet) or (doi chi)) tach - hanh tranh cua ((nhung cong) OR (dung cong)) dan toan cao*.