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