Perhaps you should try some spelling variations:
close ratings » close readings, close meetings, close range
ratings risk » patients risk
risk along » risk among, ask along
wang wang » wang yang, wang liang, wang yong
can close » can lose, a close, can cause
along who » along two, wrong who
yang can » yang fan, yang dean, yang yang

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 wang) OR (wang yan)) yang can close ratings risk along who ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang wang) or (wang yan)) yang can close ratings risk along who ;*.