Perhaps you should try some spelling variations:
"improving bank performance risk." » "improving bank performance size.", "improving bank performance based.", "improving bank performance _.", "improving market performance risk.", "improving _ performance risk.", "improving firm performance risk.", "improving urban performance risk.", "improving basic performance risk.", "improving air performance risk."
"improving land performance risk." » "improving land performance size.", "improving land performance based.", "improving land performance _.", "improving plant performance risk.", "improving loan performance risk.", "improving fund performance risk.", "improved land 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 land performance risk."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving bank performance risk.") OR ("improving land performance risk.")).
• Removing quotes may allow a broader search: (( improving bank performance risk. ) or ( improving land performance risk. )).
• Adding a wildcard symbol may retrieve word variants: (("improving bank performance risk.") or ("improving land performance risk."))*.