Perhaps you should try some spelling variations:
"global environment governance issues." » "global environmental governance issues.", "global evironmental governance issues.", "global environment government issues."
"legal environmental performance series." » "legal environment performance series.", "legal environments performance series.", "local environmental performance series.", "legal environmental performance studies.", "legal 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: (("global environment governance issues.") OR ("legal environmental performance series."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"global environment governance issues.\") OR (\"legal environmental performance series.\"))".
• Removing quotes may allow a broader search: (( global environment governance issues. ) OR ( legal environmental performance series. )).
• Adding a wildcard symbol may retrieve word variants: (("global environment governance issues.") OR ("legal environmental performance series."))*.