Perhaps you should try some spelling variations:
"improving good performance review." » "improving good performance risk.", "improving good performance evidence.", "improving poor performance review.", "improving fund performance review.", "improving job performance review.", "improving food performance review.", "improving road performance review.", "improving land performance review."
"improving loan performance series." » "improving loan performance metrics.", "improving loan performance reviews.", "improving loan performance targets.", "improving poor performance series.", "improving bank performance series.", "improving _ performance series.", "improving local performance series.", "improving land performance series.", "improving road performance series."

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