Perhaps you should try some spelling variations:
"improving social performance metrics." » "improving social performance contracts.", "improving social performance contract.", "improving school performance metrics.", "improving fiscal performance metrics.", "improving financial performance metrics."
"improving thermal performance measures." » "improving maternal performance measures.", "improving rural performance measures.", "improving human performance measures."

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

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