Perhaps you should try some spelling variations:
bien tinh » bi tinh, yen tinh, diep tinh
canh manh » lanh manh, canh tranh, cach mang
tong cong » trong cong, cong cong, dung cong
manh cua » doanh cua, ban cua
cua tong » cua cong, cua dong, cua nong
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 manh cua tong cong ((san toan) OR (dan than)) cao~.
• Adding a wildcard symbol may retrieve word variants: ho bien tinh - canh manh cua tong cong ((san toan) or (dan than)) cao*.