Perhaps you should try some spelling variations:
ratings risk » patients risk
lost ratings » load ratings, lost earnings, bond ratings
liang yang » liang ying, yang yang, huang yang
among east » among breast, among ers, among health
wang yang » wang yan, wang liang, wang yanling
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 yang) OR (wang yang)) can lost ratings risk among east ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((liang yang) OR (wang yang)) can lost ratings risk among east ;*".