Perhaps you should try some spelling variations:
what dato » what data, what do
zhang zhi » zhong zhi, wang zhi, zhang wei
dong cao » dong xiao, dan cao, dong nan
say what » why what
hong ghi » zhong zhi, hong g, hong hai
cao say » can say, ceos say, nao says
wan min » wan ming, han min, kan min

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: dong cao say what dato wan min ((hong ghi) OR (zhang zhi)) ;~.
• Adding a wildcard symbol may retrieve word variants: dong cao say what dato wan min ((hong ghi) or (zhang zhi)) ;*.