Perhaps you should try some spelling variations:
ratings risk » patients risk
patient risk » patients risk, patient task, patient cost
yanling can » banking can, planning can
wang wang » wang yang, wang liang, wang yan
among who » along who, among hr, wrong who
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 wang yanling can lost ((ratings risk) or (patient risk)) among who ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang yanling can lost ((ratings risk) OR (patient risk)) among who ;*.