Perhaps you should try some spelling variations:
"improving human performance review." » "improving human performance risk.", "improving human performance evidence.", "improving loan performance review.", "improving thermal performance review.", "improving chain performance review."
"improving local performance risks." » "improving local performance risk.", "improving social performance risks.", "improving global performance risks.", "improving total performance risks.", "improving fiscal performance risks."

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

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