Perhaps you should try some spelling variations:
"global environmental governance series." » "global environmental performance series.", "global environment governance series.", "legal environment governance series.", "global environmental governance issues."
"global empowerment governance system." » "global empowerment guidance system.", "global enforcement governance system.", "local empowerment governance system.", "legal empowerment governance system.", "social empowerment governance system.", "global empowerment governance issues."

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

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