Perhaps you should try some spelling variations:
"improving fund performance contract." » "improving fund performance contracts.", "improving firm performance contract.", "improving bank performance contract.", "improving _ performance contract.", "improving land performance contract.", "improving food performance contract.", "improving feed performance contract."
"improving human performance metrics." » "improving human performance contracts.", "improving human performance measures.", "improving loan performance metrics.", "improving thermal performance metrics.", "improving company performance metrics.", "improving urban performance metrics.", "improving rural performance metrics."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving human performance metrics.") or ("improving fund performance contract."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving human performance metrics.") OR ("improving fund performance contract."))*.
• Removing quotes may allow a broader search: (( improving human performance metrics. ) or ( improving fund performance contract. ))*.