Perhaps you should try some spelling variations:
"Improving human performance metrics." » "Improving human performance contracts.", "Improving human performance measures.", "Improving human performance contract.", "Improving loan performance metrics.", "Improving thermal performance metrics.", "Improving company performance metrics."
"improving human performance review." » "improving human performance risk.", "improving human performance evidence.", "improving loan performance review.", "improving thermal performance review.", "improving company performance review.", "improving urban performance review.", "improving rural 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 metrics.") OR ("improving human performance review."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Improving human performance metrics.\") OR (\"improving human performance review.\"))".
• Removing quotes may allow a broader search: (( Improving human performance metrics. ) OR ( improving human performance review. )).
• Adding a wildcard symbol may retrieve word variants: (("Improving human performance metrics.") OR ("improving human performance review."))*.