Perhaps you should try some spelling variations:
ratings risk » patients risk
lost ratings » load ratings, lost earnings, bond ratings
wang jiang » wang liang, wang jing, wang yang
among east » among breast, among ers, among health
wuhan can » when can, woman can
juan can » japan can, juan rana, juan a

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "wang jiang ((juan can) OR (wuhan can)) lost ratings risk among east ;~".
• Adding a wildcard symbol may retrieve word variants: wang jiang ((juan can) OR (wuhan can)) lost ratings risk among east ;*.