Perhaps you should try some spelling variations:
ratings risk » patients risk
risk wrong » risk among, risk along
hua jiang » ru jiang, nu jiang
wrong who » wrong why, wrong what, wrong when
run cost » iran cost, can cost, run cash
eu cost » au costa, der cost, end cost
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang hua jiang ((run cost) OR (eu cost)) ratings risk wrong who ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang hua jiang ((run cost) OR (eu cost)) ratings risk wrong who ;*".