Perhaps you should try some spelling variations:
"improving rural performance measures." » "improving euract performance measures.", "improving larval performance measures.", "improving human performance measures."
"improving pupil performance targets." » "improving social performance targets.", "improving model performance targets.", "improving judicial performance targets.", "improving public performance targets.", "improving civil performance targets.", "improving audit 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 pupil performance targets.") OR ("improving rural performance measures."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving pupil performance targets.\") OR (\"improving rural performance measures.\"))".
• Removing quotes may allow a broader search: (( improving pupil performance targets. ) OR ( improving rural performance measures. )).
• Adding a wildcard symbol may retrieve word variants: (("improving pupil performance targets.") OR ("improving rural performance measures."))*.