Perhaps you should try some spelling variations:
"improving budgetary performance measures." » "improving budget performance measures."
"improving thermal performance metrics." » "improving thermal performance contracts.", "improving thermal performance contract.", "improving maternal performance metrics.", "improving rural performance metrics.", "improving human performance metrics."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving budgetary performance measures.") or ("improving thermal performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving budgetary performance measures.") OR ("improving thermal performance metrics.")).
• Removing quotes may allow a broader search: (( improving budgetary performance measures. ) or ( improving thermal performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving budgetary performance measures.") or ("improving thermal performance metrics."))*.