Perhaps you should try some spelling variations:
"improving judicial performance metrics." » "improving social performance metrics.", "improving financial performance metrics.", "improving fiscal performance metrics.", "improving judicial performance measures.", "improving municipal performance metrics.", "improve judicial performance metrics."
"improving urban performance series." » "improving urban performance studies.", "improving urban performance size.", "improving bank performance series.", "improving loan performance series.", "improving human performance series."

Try widening your search to All Fields.

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