Perhaps you should try some spelling variations:
patients risk » patients links, patients si, patients view
patient risk » patient task, patient cost, orient risk
wrong who » wrong why, wrong what, wrong when
nu jiang » ru jiang, hua jiang, wu jian
run cost » iran cost, can cost, run cash
der cost » oder cost, user cost, debt cost
wang nu » wang hua, wang hui, wang yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang nu jiang ((run cost) or (der cost)) ((patients risk) OR (patient risk)) wrong who ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang nu jiang ((run cost) OR (der cost)) ((patients risk) OR (patient risk)) wrong who ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang nu jiang ((run cost) or (der cost)) ((patients risk) OR (patient risk)) wrong who ;*".