Perhaps you should try some spelling variations:
"improving erm performances reviews." » "improving erm performance reviews.", "improving erm performance review.", "improving erm performances series.", "improving firm performances reviews.", "improving team performances reviews.", "improving ers performances reviews.", "improving e performances reviews.", "improving eap performances reviews."
"improving urban performance metrics." » "improving urban performance measures.", "improving bank performance metrics.", "improving loan performance metrics.", "improving human performance metrics."

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 urban performance metrics.") OR ("improving erm performances reviews."))~.
• Removing quotes may allow a broader search: (( improving urban performance metrics. ) or ( improving erm performances reviews. ))~.
• Adding a wildcard symbol may retrieve word variants: (("improving urban performance metrics.") or ("improving erm performances reviews."))*.