Perhaps you should try some spelling variations:
"improving urban performance reviews." » "improving urban performance review.", "improving urban performance reports.", "improving urban performance risks.", "improving bank performance reviews.", "improving loan performance reviews.", "improving human performance reviews."
"improving crop performance measures." » "improving group performance measures.", "improving top performance measures.", "improving do performance measures.", "improving co performance measures.", "improving pro performance measures.", "improving macro performance measures."

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

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