Perhaps you should try some spelling variations:
"improving thermal performance metrics." » "improving thermal performance measures.", "improving external performance metrics.", "improving animal performance metrics.", "improving erm performance metrics."
"improving larval performance review." » "improving larval performance risk.", "improving larval performance evidence.", "improving level performance review.", "improving maximal performance review.", "improving fiscal performance review.", "improving local performance review.", "improving legal performance review.", "improving land performance review."

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