Perhaps you should try some spelling variations:
"improving can performance metrics." » "improving can performance measures.", "improving chain performance metrics.", "improving loan performance metrics.", "improving human performance metrics.", "improving care performance metrics.", "improving a performance metrics.", "improving co performance metrics."
"improved land performance series." » "improved land performance studies.", "improved land performance size.", "improved plant performance series.", "improved fund performance series.", "improved und performance series.", "improve land performance series."

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

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