Perhaps you should try some spelling variations:
changes made » changes a, changes due
can chen » can when, can china, jean chen
chen wei » zhen wei, chen e
wei chen » wei shen, frei chen, jui chen
yang jun » yang jui, pang jun, yang judy
yang jin » yang jie, ying jin, shang jin
tin can » tin tan
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: tin can chen wei chen ((((((yang jun) OR (yang jin))) OR (yang di))) OR (yang xi)) changes made ;~.
• Adding a wildcard symbol may retrieve word variants: tin can chen wei chen ((((((yang jun) or (yang jin))) or (yang di))) or (yang xi)) changes made ;*.