Perhaps you should try some spelling variations:
yulu chen » yu chen
chen wang » chen yang, chen rong, chen ping
yang july » yang judy, yang jui
doing un » doing und, doing our, doing von
yang jun » yang jui, pang jun, yang jin
un dann » und dann, um dann, bin dann
wang ji » wang di, wang li, wang jing
yang xi » yang yi, yang jui

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: doing un dann yulu chen wang ji ((((yang xi) OR (yang di))) OR (((yang july) OR (yang jun)))) ;~.
• Adding a wildcard symbol may retrieve word variants: doing un dann yulu chen wang ji ((((yang xi) or (yang di))) or (((yang july) or (yang jun)))) ;*.