Perhaps you should try some spelling variations:
changes made » changes a, changes due
liu yang » liu yan, du yang, liu feng
yang wei » wang wei, fang wei, zhang wei
wei chen » wei shen, frei chen, jui chen
yang jui » yang yi
yang xi » yang yi
li liu » liu liu, li lin, li li

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: li liu yang wei chen ((((yang xi) OR (yang di))) OR (((yang jui) OR (yang judy)))) changes made ;~.
• Adding a wildcard symbol may retrieve word variants: li liu yang wei chen ((((yang xi) or (yang di))) or (((yang jui) or (yang judy)))) changes made ;*.