Perhaps you should try some spelling variations:
"improving gender performance metrics." » "improving gender performance measures.", "improving gendered performance metrics.", "improving center performance metrics.", "improving under performance metrics.", "improving energy performance metrics."
"improving donor performance metrics." » "improving donor performance measures.", "improving poor performance metrics.", "improving motor performance metrics.", "improving monitor performance metrics.", "improving indoor performance metrics.", "improving food performance metrics.", "improving export 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 gender performance metrics.") or ("improving donor performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving gender performance metrics.") OR ("improving donor performance metrics.")).
• Removing quotes may allow a broader search: (( improving gender performance metrics. ) or ( improving donor performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving gender performance metrics.") or ("improving donor performance metrics."))*.