Perhaps you should try some spelling variations:
"Improving human performance review." » "Improving human performance risk.", "Improving human performance evidence.", "Improving thermal performance review.", "Improving company performance review.", "Improving animal performance review."
"improving loan performance series." » "improving loan performance metrics.", "improving loan performance reviews.", "improving loan performance targets.", "improving poor performance series.", "improving bank performance series.", "improving _ performance series.", "improving local performance series.", "improving land performance series.", "improving road performance series."
improving human » improving urban, improving rural

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 loan performance series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("Improving human performance review.") OR ("improving loan performance series.")).
• Removing quotes may allow a broader search: (( Improving human performance review. ) or ( improving loan performance series. )).
• Adding a wildcard symbol may retrieve word variants: (("Improving human performance review.") or ("improving loan performance series."))*.