Perhaps you should try some spelling variations:
ratings risk » patients risk
can postal » bank postal, a postal, can costa
among ers » among peers, among users, among east
wang dan » wang yan, wang ban, wang yidan
dan yang » daun yang, tan yang, wang yang
can lost » can cost, can post, can boost
can lose » can close, can losers, can't lose

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 dan yang ((can postal) OR (((can lost) OR (can lose)))) ratings risk among ers ;~.
• Adding a wildcard symbol may retrieve word variants: wang dan yang ((can postal) or (((can lost) or (can lose)))) ratings risk among ers ;*.