Perhaps you should try some spelling variations:
"improving plant performance metrics." » "improving plant performance measures.", "improving port performance metrics.", "improving court performance metrics.", "improving land performance metrics.", "improving place performance metrics.", "improved plant performance metrics."
"improving co performance risk." » "improving co performance 2019.", "improving ceo performance risk.", "improving do performance risk.", "improving core performance risk.", "improving eco performance risk.", "improving crop performance risk.", "improving ict 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 co performance risk.") or ("improving plant performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving co performance risk.") OR ("improving plant performance metrics.")).
• Removing quotes may allow a broader search: (( improving co performance risk. ) or ( improving plant performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving co performance risk.") or ("improving plant performance metrics."))*.