Perhaps you should try some spelling variations:
patients risk » patient risk, patients links, patients si
wang liang » wang yang
liang yang » liang ying, wang yang, yang yang
among ers » among peers, among users, among east
can lose » can close, can lost, can losers
can post » can cost, can lost, can past

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 yang ((can lose) or (can post)) ((ratings risk) OR (patients risk)) among ers ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang yang ((can lose) OR (can post)) ((ratings risk) OR (patients risk)) among ers ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang yang ((can lose) or (can post)) ((ratings risk) OR (patients risk)) among ers ;*".