Perhaps you should try some spelling variations:
"improving rural performance measures." » "improving pupil performance measures.", "improving thermal performance measures.", "improving overall performance measures.", "improving urban performance measures.", "improving social performance measures."
"improving rural performance contracts." » "improving pupil performance contracts.", "improving thermal performance contracts.", "improving overall performance contracts.", "improving urban performance contracts.", "improving social performance contracts."

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 measures.") OR ("improving rural performance contracts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving rural performance measures.\") OR (\"improving rural performance contracts.\"))".
• Removing quotes may allow a broader search: (( improving rural performance measures. ) OR ( improving rural performance contracts. )).
• Adding a wildcard symbol may retrieve word variants: (("improving rural performance measures.") OR ("improving rural performance contracts."))*.