Perhaps you should try some spelling variations:
"improving crop performance metrics." » "improving crop performance contracts.", "improving crop performance measures.", "improving crop performance contract.", "improving poor performance metrics.", "improving job performance metrics.", "improving city performance metrics.", "improving co performance metrics.", "improving macro performance metrics.", "improving food performance metrics."
"improving urban performance risks." » "improving bank performance risks.", "improving loan performance risks.", "improving can performance risks.", "improving urban performance risk.", "improving urban performance issues.", "improving urban performance based."

Try widening your search to All Fields.

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