Perhaps you should try some spelling variations:
"improving land performance metrics." » "improving land performance measures.", "improving plant performance metrics.", "improving fund performance metrics.", "improving und performance metrics."
"improving macro performance series." » "improving macro performance studies.", "improving macro performance size.", "improving crop performance series.", "improving ceo performance series.", "improving machine performance series.", "improving air performance series.", "improving care performance series.", "improving co performance series."

Try widening your search to All Fields.

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

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