Perhaps you should try some spelling variations:
john dato » johar dato
zhang zhi » zhong zhi, wang zhi, zhang wei
dong can » dong cao, dong nan, congo can
say john » fay john, gay john, hay john
hong ghi » zhong zhi, hong g, hong hai
can say » can save
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 can say john dato wan min ((hong ghi) OR (zhang zhi)) ;~.
• Adding a wildcard symbol may retrieve word variants: dong can say john dato wan min ((hong ghi) or (zhang zhi)) ;*.