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 system."
"weak enforcement governance issues." » "weak empowerment governance issues.", "law enforcement governance issues.", "tax enforcement governance issues.", "_ enforcement 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 ("weak enforcement governance issues."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("global environmental governance series.") OR ("weak enforcement governance issues."))*.
• Removing quotes may allow a broader search: (( global environmental governance series. ) or ( weak enforcement governance issues. ))*.