Perhaps you should try some spelling variations:
"improving company performance reviews." » "improving country performance reviews.", "improving company performance review.", "improving company performance reports.", "improving company performance results.", "improve company performance reviews.", "improving compliance performance reviews.", "improving community performance reviews."
"Improving animal performance risks." » "Improving annual performance risks.", "Improving thermal performance risks.", "Improving fiscal performance risks.", "Improving animal performance risk."
improving animal » improving initial, improving optimal, improving criminal

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

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