Perhaps you should try some spelling variations:
"improving public performance reviews." » "improving public performance review.", "improving public performance reports.", "improving public performance risks.", "improving music performance reviews.", "improving policy performance reviews."
"improving asset performance risk." » "improving dataset performance risk.", "improving market performance risk.", "improving affect performance risk.", "improving asset performance 2019.", "improving adult performance risk.", "improving audit performance risk.", "improving fast performance risk."

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

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