Perhaps you should try some spelling variations:
patients risk » patient risk, patients links, patients si
yan yang » yang yang, yao yang, dan yang
jun cost » run cost, can cost
end cost » end close, land cost, end iot
how slum » how slow, how sub, how sun
eu cost » au costa, der cost, eu court
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 yan yang ((jun cost) or (((eu cost) or (end cost)))) patients risk how slum ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan yang ((jun cost) OR (((eu cost) OR (end cost)))) patients risk how slum ;.
• Adding a wildcard symbol may retrieve word variants: wang yan yang ((jun cost) or (((eu cost) or (end cost)))) patients risk how slum ;*.