Perhaps you should try some spelling variations:
"legal environment performance metrics." » "legal environmental performances metrics.", "legal government performance metrics.", "legal investment performance metrics.", "legal environment performance measures.", "global environment performance metrics."
"level environmental performance series." » "local environmental performance series.", "global environmental performance series.", "rural environmental performance series.", "level environmental performance studies.", "level environmental performance size."

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

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