Perhaps you should try some spelling variations:
"improving indoor performance metrics." » "improving indoor performance measures.", "improving outdoor performance metrics.", "improving donor performance metrics.", "improving floor performance metrics.", "improving india's performance metrics.", "improving food performance metrics.", "improving gender performance metrics."
"improving poor performance metrics." » "improving poor performance measures.", "improving sector performance metrics.", "improving power performance metrics.", "improving food performance metrics.", "improving peer 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 indoor performance metrics.") or ("improving poor performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving indoor performance metrics.") OR ("improving poor performance metrics.")).
• Removing quotes may allow a broader search: (( improving indoor performance metrics. ) or ( improving poor performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving indoor performance metrics.") or ("improving poor performance metrics."))*.