Perhaps you should try some spelling variations:
"improving local performance review." » "improving local performance risk.", "improving local performance evidence.", "improving social performance review.", "improving global performance review.", "improving total performance review.", "improving fiscal performance review."
"improving firm performance contracts." » "improving firms performance contracts.", "improving air performance contracts.", "improving erm performance contracts."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving firm performance contracts.") or ("improving local performance review."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving firm performance contracts.") OR ("improving local performance review.")).
• Removing quotes may allow a broader search: (( improving firm performance contracts. ) or ( improving local performance review. )).
• Adding a wildcard symbol may retrieve word variants: (("improving firm performance contracts.") or ("improving local performance review."))*.