Perhaps you should try some spelling variations:
"improving quality performance risk." » "improving utility performance risk.", "improving safety performance risk.", "improving city performance risk.", "improving health performance risk.", "improving quality performance 2019."
"improving care performance review." » "improving care performance evidence.", "improving trade performance review.", "improving drive performance review.", "improving 2 performance review.", "improving early performance review.", "improving air performance review.", "improving data performance review."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving quality performance risk.") or ("improving care performance review."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving quality performance risk.") OR ("improving care performance review.")).
• Removing quotes may allow a broader search: (( improving quality performance risk. ) or ( improving care performance review. )).
• Adding a wildcard symbol may retrieve word variants: (("improving quality performance risk.") or ("improving care performance review."))*.