Perhaps you should try some spelling variations:
ratings risk » patients risk
lost ratings » load ratings, lost earnings, bond ratings
liang ying » liang liying, huang ying, zhang ying
liang yin » jiang yi, liang dan, liang li
among ers » among peers, among users, among east
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 yin) or (liang ying)) can lost ratings risk among ers ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((liang yin) OR (liang ying)) can lost ratings risk among ers ;*.