Perhaps you should try some spelling variations:
"improving local performance series." » "improving local performance metrics.", "improving local performance reviews.", "improving local performance targets.", "improving social performance series.", "improving loan performance series.", "improving fiscal performance series.", "improving global performance series."
"improving annual performance review." » "improving fiscal performance review.", "improving social performance review.", "improving financial performance review.", "improving annual performance risk.", "improving annual performance evidence.", "improving animal performance review.", "improving mental performance review.", "improving sexual 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 local performance series.") or ("improving annual performance review."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving local performance series.") OR ("improving annual performance review."))*.
• Removing quotes may allow a broader search: (( improving local performance series. ) or ( improving annual performance review. ))*.