Perhaps you should try some spelling variations:
"improving company performance measures." » "improving country performance measures.", "improving loan performance measures.", "improving corporate performance measures."
"improving human performance risks." » "improving loan performance risks.", "improving thermal performance risks.", "improving animal performance risks.", "improving human performance risk.", "improving human performance issues.", "improving human performance based.", "improving urban performance risks.", "improving rural performance risks."

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