Perhaps you should try some spelling variations:
changes made » changes a, changes due
wang xiaoyi » wang xiaolin, wang xiaozu, wang xiaoping
xiaoyi yang » xiao yang
zhang ming » zhang xin
yang yan » yang yang, wang yan, yang fan
yan sher » khan sher, can she, han shen
hong ng » hong kong, hong jong, hong hong

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: wang xiaoyi yang yan sher ((zhang ming) OR (changes made)) hong ng ;~.
• Adding a wildcard symbol may retrieve word variants: wang xiaoyi yang yan sher ((zhang ming) or (changes made)) hong ng ;*.