Perhaps you should try some spelling variations:
"improving company performance _." » "improving country performance _.", "improving loan performance _.", "improving corporate performance _.", "improving human performance _."
"improving rural performance review." » "improving rural performance risk.", "improving rural performance evidence.", "improving pupil performance review.", "improving thermal performance review.", "improving overall performance review.", "improving urban performance review.", "improving social performance review."

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