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."
"improving land performance series." » "improving land performance studies.", "improving land performance size.", "improving plant performance series.", "improving fund performance series.", "improving und 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: (("improving land performance series.") or ("improving can performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving land performance series.") OR ("improving can performance metrics."))*.
• Removing quotes may allow a broader search: (( improving land performance series. ) or ( improving can performance metrics. ))*.