Perhaps you should try some spelling variations:
"improving human performance metrics." » "improving human performance measures.", "improving loan performance metrics.", "improving thermal performance metrics.", "improving chain performance metrics."
"improving poor performance reviews." » "improving poor performance review.", "improving poor performance reports.", "improving poor performance risks.", "improving sector performance reviews.", "improving power performance reviews.", "improving food performance reviews.", "improving peer performance reviews."

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 poor performance reviews."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving human performance metrics.") OR ("improving poor performance reviews."))*.
• Removing quotes may allow a broader search: (( improving human performance metrics. ) or ( improving poor performance reviews. ))*.