Perhaps you should try some spelling variations:
"global environmental governance system." » "global environmental performance system.", "global environment governance system."
"weak efficient government series." » "weak efficient investment series.", "weak recipient governments series.", "weak efficient investments series.", "weak efficient government services.", "weak efficient government salaries.", "weak efficient government service.", "weak sufficient government series.", "lean efficient government series.", "eco efficient government series."

Try widening your search to All Fields.

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

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