Perhaps you should try some spelling variations:
"improving board performance targets." » "improving court performance targets.", "improving good performance targets.", "improving based performance targets.", "improving food performance targets.", "improving care performance targets.", "improving blood performance targets."
"improving early performance measures." » "improving energy performance measures.", "improving entry performance measures.", "improving railway performance measures.", "improving health performance measures.", "improving equity 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 board performance targets.") or ("improving early performance measures."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving board performance targets.") OR ("improving early performance measures.")).
• Removing quotes may allow a broader search: (( improving board performance targets. ) or ( improving early performance measures. )).
• Adding a wildcard symbol may retrieve word variants: (("improving board performance targets.") or ("improving early performance measures."))*.