Perhaps you should try some spelling variations:
"improving country performance review." » "improving country performance risk.", "improving voluntary performance review.", "importing country performance review.", "improving community performance review."
"improving road performance evidence." » "improving board performance evidence.", "improving good performance evidence.", "improving bond performance evidence.", "improving food performance evidence.", "improving rural performance evidence."

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 review.") OR ("improving road performance evidence."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"improving country performance review.\") OR (\"improving road performance evidence.\"))".
• Removing quotes may allow a broader search: (( improving country performance review. ) OR ( improving road performance evidence. )).
• Adding a wildcard symbol may retrieve word variants: (("improving country performance review.") OR ("improving road performance evidence."))*.