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
hong hong » hong kong, hong jong, how hong
yang han » yang fan, kang han, yang dean
han shen » khan sher, can she, han en
hong ng » hong kong, hong jong

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