Perhaps you should try some spelling variations:
"importing country performance metrics." » "importing country performance measures.", "important country performance metrics.", "reporting country performance metrics.", "exporting country performance metrics."
"improving thermal performance metrics." » "improving thermal performance measures.", "improving external performance metrics.", "improving animal performance metrics.", "improving erm performance metrics."

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: (("importing country performance metrics.") or ("improving thermal performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("importing country performance metrics.") OR ("improving thermal performance metrics.")).
• Removing quotes may allow a broader search: (( importing country performance metrics. ) or ( improving thermal performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("importing country performance metrics.") or ("improving thermal performance metrics."))*.