Perhaps you should try some spelling variations:
yulu cheng » yulu chen, yu cheng, yuan cheng
cheng bing » cheng ling, cheng ming, chen ping
doing sin » dong sin, doing un, doing von
yang july » yang judy, yang jui, yang jun
sin dann » sein dann, bin dann, ein dank
bing jin » ying jin, jing ji, yang jin
yang yi » yang xi, 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 sin dann yulu cheng bing jin ((((yang yi) OR (yang di))) OR (yang july)) ;~.
• Adding a wildcard symbol may retrieve word variants: doing sin dann yulu cheng bing jin ((((yang yi) or (yang di))) or (yang july)) ;*.