Perhaps you should try some spelling variations:
"improving national performance metrics." » "improving regional performance metrics.", "improving operational performance metrics.", "improving educational performance metrics.", "improving maternal performance metrics.", "improving natural performance metrics.", "improve national performance metrics."
"improving rural performance measures." » "improving euract performance measures.", "improving larval performance measures.", "improving pupil 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 national performance metrics.") OR ("improving rural performance measures."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving national performance metrics.\") OR (\"improving rural performance measures.\"))".
• Removing quotes may allow a broader search: (( improving national performance metrics. ) OR ( improving rural performance measures. )).
• Adding a wildcard symbol may retrieve word variants: (("improving national performance metrics.") OR ("improving rural performance measures."))*.