Perhaps you should try some spelling variations:
"improving company performance series." » "improving country performance series.", "improving loan performance series.", "improving corporate performance series.", "improving company performance metrics.", "improving company performance reviews.", "improving company performance targets.", "improving human performance series."
"improving urban performance review." » "improving urban performance risk.", "improving urban performance evidence.", "improving bank performance review.", "improving loan performance review.", "improving can performance review."

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