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 past performance review." » "improving past performance evidence.", "improving plant performance review.", "improving port performance review.", "improving transit performance review.", "improving fast performance review.", "improving post performance review."

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

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