Perhaps you should try some spelling variations:
"improving urban performance metrics." » "improving urban performance measures.", "improving bank performance metrics.", "improving loan performance metrics.", "improving human performance metrics."
"improving past performance evidence." » "improving plant performance evidence.", "improving port performance evidence.", "improving transit performance evidence.", "improving fast performance evidence.", "improving post 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 past performance evidence.") OR ("improving urban performance metrics."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving past performance evidence.\") OR (\"improving urban performance metrics.\"))*".
• Removing quotes may allow a broader search: (( improving past performance evidence. ) OR ( improving urban performance metrics. ))*.