Perhaps you should try some spelling variations:
"improving shared performance _." » "improving sharia performances _.", "improving care performance _.", "improving based performance _.", "improving water performance _.", "improving land performance _.", "improving safety performance _."
"improving bank performance risk." » "improving bank performance size.", "improving bank performance based.", "improving bank performance data.", "improving market performance risk.", "improving _ performance risk.", "improving firm performance risk.", "improving land performance risk.", "improving urban performance risk.", "improving basic performance risk."

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 bank performance risk.") or ("improving shared performance _."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving bank performance risk.") OR ("improving shared performance _.")).
• Removing quotes may allow a broader search: (( improving bank performance risk. ) or ( improving shared performance _. )).
• Adding a wildcard symbol may retrieve word variants: (("improving bank performance risk.") or ("improving shared performance _."))*.