Perhaps you should try some spelling variations:
patients risk » patient risk, patients links, patients si
lost patients » les patients, cost patient, cleft patients
risk wrong » risk among, risk along
wrong when » wrong keen, wrong what, wrong who
wang yang » wang yan, 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 ((wang yang) or (wang liang)) can lost patients risk wrong when ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((wang yang) OR (wang liang)) can lost patients risk wrong when ;*.