Perhaps you should try some spelling variations:
"Improving animal performance metrics." » "Improving animal performance contracts.", "Improving animal performance measures.", "Improving animal performance contract.", "Improving annual performance metrics.", "Improving fiscal performance metrics.", "Improving social performance metrics."
"improving thermal performance metrics." » "improving thermal performance contracts.", "improving thermal performance measures.", "improving thermal performance contract.", "improving maternal performance metrics.", "improving rural performance metrics.", "improving human performance metrics."
improving animal » improving criminal, improving primary, improving climate

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (("Improving animal performance metrics.") or ("improving thermal performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("Improving animal performance metrics.") OR ("improving thermal performance metrics.")).
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