Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
bien tinh » bi tinh, diep tinh, ban tinh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
yen tinh » tuyen tinh
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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: ho ((bien tinh) OR (yen tinh)) - canh tranh cua thong cong ((dan toan) OR (dan than)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((bien tinh) OR (yen tinh)) - canh tranh cua thong cong ((dan toan) or (dan than)) cao~".
• Adding a wildcard symbol may retrieve word variants: ho ((bien tinh) OR (yen tinh)) - canh tranh cua thong cong ((dan toan) or (dan than)) cao*.