Perhaps you should try some spelling variations:
"improving based performance risk." » "improving bank performance risk.", "improving care performance risk.", "improving board performance risk.", "improving based performance size.", "improving based performance based.", "improving based performance _.", "improving basic performance risk.", "improving shared performance risk.", "improving water performance risk."
"improving poor performance risk." » "improving poor performance size.", "improving poor performance based.", "improving poor performance _.", "improving export performance risk.", "improving sector performance risk.", "improving _ performance risk.", "improving power performance risk.", "improving food performance risk.", "improving indoor 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 poor performance risk.") or ("improving based performance risk."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving poor performance risk.") OR ("improving based performance risk.")).
• Removing quotes may allow a broader search: (( improving poor performance risk. ) or ( improving based performance risk. )).
• Adding a wildcard symbol may retrieve word variants: (("improving poor performance risk.") or ("improving based performance risk."))*.