Perhaps you should try some spelling variations:
ratings risk » patients risk
lost ratings » load ratings, lost earnings, bond ratings
among users » among peers, among masters, paying users
liang ying » liang liying, zhang ying, jiang yajing
huang ying » huang jing, huang ting, huang yang
among ers » among peers, among east, among heis
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 ((liang ying) OR (huang ying)) can lost ratings risk ((among ers) or (among users)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((liang ying) OR (huang ying)) can lost ratings risk ((among ers) OR (among users)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang ying) OR (huang ying)) can lost ratings risk ((among ers) or (among users)) ;*".