Perhaps you should try some spelling variations:
ratings risk » patients risk
lost ratings » load ratings, lost earnings, bond ratings
among east » among breast, among ers, among health
wei yang » pei yang, wei wang, wei yang's
can lost » can cost, can lose, can post
wai yan » wang yan
yin can » tin can, yin fang, yin hang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wai yan) OR (wei yang)) yin can lost ratings risk among east ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wai yan) OR (wei yang)) yin can lost ratings risk among east ;*".