Perhaps you should try some spelling variations:
"improving rural performance review." » "improving rural performance risk.", "improving rural performance evidence.", "improving euract performance review.", "improving larval performance review.", "improving pupil performance review."
"improving thermal performance targets." » "improving external performance targets.", "improving animal performance targets.", "improving erm 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 rural performance review.") OR ("improving thermal performance targets."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving rural performance review.\") OR (\"improving thermal performance targets.\"))".
• Removing quotes may allow a broader search: (( improving rural performance review. ) OR ( improving thermal performance targets. )).
• Adding a wildcard symbol may retrieve word variants: (("improving rural performance review.") OR ("improving thermal performance targets."))*.