Perhaps you should try some spelling variations:
khong thong » thong thong, khong trong, thong thuong
bien tinh » bi tinh, yen tinh, diep tinh
tranh cua » doanh cua, manh cua
cua khong » hua khong, cua phuong, cua thuong
san toan » van toan, dan toan, manh toan
dan than » dan chan, ban than, van than
ho bien » pho bien, hoa bien, so bien

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 - canh tranh cua khong thong ((san toan) OR (dan than)) cao~.
• Adding a wildcard symbol may retrieve word variants: ho bien tinh - canh tranh cua khong thong ((san toan) or (dan than)) cao*.