Perhaps you should try some spelling variations:
"improving land performance series." » "improving land performance metrics.", "improving land performance reviews.", "improving land performance review.", "improving plant performance series.", "improving bank performance series.", "improving loan performance series.", "improved land performance series."
"improving entry performance evidence." » "improving energy performance evidence.", "improving country performance evidence.", "improving city performance evidence.", "improving central performance evidence.", "improving mental performance evidence."

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 land performance series.") or ("improving entry performance evidence."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving land performance series.") OR ("improving entry performance evidence.")).
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• Adding a wildcard symbol may retrieve word variants: (("improving land performance series.") or ("improving entry performance evidence."))*.