Perhaps you should try some spelling variations:
"improving bank performance measures." » "improving market performance measures.", "improving _ performance measures.", "improving firm performance measures.", "improving land performance measures.", "improving urban performance measures.", "improving basic performance measures."
"improving past performance based." » "improving plant performance based.", "improving port performance based.", "improving based performance based.", "improving basic performance based.", "improving asset performance based.", "improving land performance based."

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 measures.") OR ("improving past performance based."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving bank performance measures.\") OR (\"improving past performance based.\"))".
• Removing quotes may allow a broader search: (( improving bank performance measures. ) OR ( improving past performance based. )).
• Adding a wildcard symbol may retrieve word variants: (("improving bank performance measures.") OR ("improving past performance based."))*.