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

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

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