Perhaps you should try some spelling variations:
ratings risk » patients risk
lost ratings » load ratings, lost earnings, bond ratings
risk wrong » risk among, risk along
wang yang » wang yan, wang yanling
wrong who » wrong why, wrong what, wrong when
yang can » yang fan, yang dean, yang yang
can lost » can cost, can lose, can post

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang liang) or (wang yang)) yang can lost ratings risk wrong who ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang liang) OR (wang yang)) yang can lost ratings risk wrong who ;*.