Perhaps you should try some spelling variations:
"legal environment performance series." » "legal environmental performance series.", "legal environmental performances series.", "legal government performance series.", "legal environment performance studies.", "legal environment performance size."
"global environment governance system." » "global environmental governance system.", "global evironmental governance system.", "global environment government system."

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

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