Perhaps you should try some spelling variations:
patients risk » patients links, patients si, patients view
patient risk » patient task, patient cost, orient risk
wang wang » wang yang, wang liang, wang yan
among who » along who, among hr, wrong who
can lose » can close, can losers, can't lose
can lost » can cost, can post, can boost

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 yanling ((can lose) OR (can lost)) ((patients risk) OR (patient risk)) among who ;~.
• Adding a wildcard symbol may retrieve word variants: wang wang yanling ((can lose) or (can lost)) ((patients risk) or (patient risk)) among who ;*.