Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
nhung cong » dung cong, hang cong, nhung don
theo chua » theo chu, ho chua, cheo cua
chua xang » chua nang, chuc nang, chu bang
tranh cua » doanh cua, manh cua
tan toan » tap toan, van toan, dan 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 chua xang - canh tranh cua ((nhung cong) OR (thong cong)) ((tan toan) OR (tan tran)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chua xang - canh tranh cua ((nhung cong) or (thong cong)) ((tan toan) OR (tan tran)) ban~".
• Adding a wildcard symbol may retrieve word variants: theo chua xang - canh tranh cua ((nhung cong) or (thong cong)) ((tan toan) OR (tan tran)) ban*.