Perhaps you should try some spelling variations:
"improving road performance metrics." » "improving road performance measures.", "improving board performance metrics.", "improving good performance metrics.", "improving bond performance metrics.", "improving food performance metrics.", "improving rural performance metrics."
"improving firms performance risk." » "improving firm performance risk.", "improving firm performances risk.", "improving funds performance risk.", "improving firms performance 2019.", "improving farmers performance risk.", "importing firms performance risk.", "improving air performance risk."

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