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

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 system.") OR ("legal government performance series."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"global environmental governance system.\") OR (\"legal government performance series.\"))".
• Removing quotes may allow a broader search: (( global environmental governance system. ) OR ( legal government performance series. )).
• Adding a wildcard symbol may retrieve word variants: (("global environmental governance system.") OR ("legal government performance series."))*.