Perhaps you should try some spelling variations:
"improving economic performance metrics." » "improving economic performance measures.", "improve economic performance metrics.", "improved economic performance metrics."
"improving port performance targets." » "improving export performance targets.", "improving court performance targets.", "improving plant performance targets.", "improving post performance targets.", "improving poor performance targets."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving economic performance metrics.") or ("improving port performance targets."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving economic performance metrics.") OR ("improving port performance targets."))*.
• Removing quotes may allow a broader search: (( improving economic performance metrics. ) or ( improving port performance targets. ))*.