Perhaps you should try some spelling variations:
"improving city performance metrics." » "improving city performance contracts.", "improving city performance measures.", "improving city performance contract.", "improving firm performance metrics.", "improving high performance metrics.", "improving key performance metrics.", "improving its performance metrics.", "improving equity performance metrics.", "improving birth performance metrics."
"improving local performance evidence." » "improving social performance evidence.", "improving loan performance evidence.", "improving fiscal performance evidence.", "improving global performance evidence."

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