Perhaps you should try some spelling variations:
ratings risk » patients risk
among peers » among ers, among users, among letters
wang liang » wang yang
liang yang » liang ying, wang yang, yang yang
can losers » can lower
can costa » can cost, can postal, da costa
can lose » can close, can lost, can't lose

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