Perhaps you should try some spelling variations:
"improving revenue performance metrics." » "improving revenue performance measures.", "impacting revenue performance metrics.", "improve revenue performance metrics.", "driving revenue performance metrics."
"improving local performance series." » "improving local performance studies.", "improving local performance size.", "improving social performance series.", "improving global performance series.", "improving total performance series.", "improving fiscal performance series."

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("improving local performance series.") or ("improving revenue performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving local performance series.") OR ("improving revenue performance metrics.")).
• Removing quotes may allow a broader search: (( improving local performance series. ) or ( improving revenue performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving local performance series.") or ("improving revenue performance metrics."))*.