Perhaps you should try some spelling variations:
"improving bank performance based." » "improving bank performance measures.", "improving market performance based.", "improving _ performance based.", "improving firm performance based.", "improving land performance based.", "improving urban performance based.", "improving basic performance based."
"improving co performance data." » "improving co performance _.", "improving do performance data.", "improving crop performance data.", "improving job performance data.", "improving _ performance data.", "improving macro performance data.", "improving food performance data."

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