Perhaps you should try some spelling variations:
"improving land performance review." » "improving land performance risk.", "improving land performance evidence.", "improving plant performance review.", "improving fund performance review.", "improving und performance review."
"improving country performance measures." » "improving voluntary performance measures.", "importing country performance measures.", "improving community performance measures."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving country performance measures.") OR ("improving land performance review."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving country performance measures.\") OR (\"improving land performance review.\"))*".
• Removing quotes may allow a broader search: (( improving country performance measures. ) OR ( improving land performance review. ))*.