Perhaps you should try some spelling variations:
"improving building performance targets." » "improving teaching performance targets.", "improving guiding performance targets.", "improving living performance targets.", "improving reading performance targets."
"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 building performance targets.") or ("improving rural performance measures."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving building performance targets.") OR ("improving rural performance measures."))*.
• Removing quotes may allow a broader search: (( improving building performance targets. ) or ( improving rural performance measures. ))*.