Perhaps you should try some spelling variations:
chen zhang » cheng zhang, zhen zhang, chen zheng
zhang ming » zhang xin
ping wang » ping pong, hong wang
jeong 情 » jeong _, jeongui 情, jeong mi
wei yang » pei yang, wei wang, wei yang's
kong siu » kong eiu, wong siu, dong sin
yang yi » yang di, yang xi, yang jui
yi chen » jui chen

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) OR (wei yang)) yang yi chen zhang ming ((kong siu) OR (jeong 情)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((ping wang) or (wei yang)) yang yi chen zhang ming ((kong siu) or (jeong 情)) ;*.