Perhaps you should try some spelling variations:
credits standing » credit standing, credit standings, credit outstanding
standing trusted » tagging trusted, standing trees
computing self » comparing self, computers self, computing mec
beijing rural » building rural, buying rural, raising rural
change rural » change moral, challenge rural, changing rural
wang » wing, wan, lang

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 yan ((beijing rural) OR (change rural)) credits standing trusted computing self ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan ((beijing rural) or (change rural)) credits standing trusted computing self ;*.