Perhaps you should try some spelling variations:
"improving tax performance metrics." » "improving tax performance contracts.", "improving tax performance measures.", "improving tax performance contract.", "improving a performance metrics.", "improving can performance metrics.", "improving dam performance metrics.", "improving trade performance metrics.", "improving land performance metrics.", "improving data performance metrics."
"improving road performance targets." » "improving board performance targets.", "improving loan performance targets.", "improving good performance targets.", "improving food performance targets.", "improving urban performance targets.", "improving rural performance targets."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving road performance targets.") or ("improving tax performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving road performance targets.") OR ("improving tax performance metrics.")).
• Removing quotes may allow a broader search: (( improving road performance targets. ) or ( improving tax performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving road performance targets.") or ("improving tax performance metrics."))*.