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