Perhaps you should try some spelling variations:
"improving poor performance metrics." » "improving poor performance contracts.", "improving poor performance measures.", "improving poor performance contract.", "improving export performance metrics.", "improving sector performance metrics.", "improving firm performance metrics.", "improving power performance metrics.", "improving food performance metrics.", "improving indoor performance metrics."
"improving _ performance series." » "improving _ performance reviews.", "improving _ performance review.", "improving _ performance targets."

You may be able to get more results by adjusting your search query.

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