Perhaps you should try some spelling variations:
ratings risk » patients risk
lost ratings » load ratings, lost earnings, bond ratings
among east » among breast, among ers, among health
wang yang » wang yan, wang yanling
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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang liang) OR (wang yang)) yang can lost ratings risk among east ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang liang) OR (wang yang)) yang can lost ratings risk among east ;*.