Perhaps you should try some spelling variations:
"improving social performance measures." » "improving school performance measures.", "improving fiscal performance measures.", "improving financial performance measures."
"improving human performance review." » "improving human performance risk.", "improving human performance evidence.", "improving loan performance review.", "improving thermal performance review.", "improving chain 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 human performance review.") OR ("improving social performance measures."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving human performance review.\") OR (\"improving social performance measures.\"))*".
• Removing quotes may allow a broader search: (( improving human performance review. ) OR ( improving social performance measures. ))*.