Perhaps you should try some spelling variations:
zhang ming » zhang xin
zhang jian » zhang fan, shang jin
ping wang » ping pong, hong wang
wong shiu » wong siu, cong shu, song shin
zhi sign » i sign, ni sign
kong siu » kong eiu, wong siu, dong sin
yan zhi » yan zi, wang zhi

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: ping wang yan zhi sign ((zhang ming) OR (zhang jian)) ((wong shiu) OR (kong siu)) ;~.
• Adding a wildcard symbol may retrieve word variants: ping wang yan zhi sign ((zhang ming) or (zhang jian)) ((wong shiu) or (kong siu)) ;*.