Perhaps you should try some spelling variations:
ratings risk » patients risk
among peers » among ers, among users, among letters
wang liang » wang yang
liang ying » liang liying, huang ying, zhang ying
can close » can lose, can cause, can code
can lost » can cost, can lose, can post
a close » a closer, a closed, _ close

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