Perhaps you should try some spelling variations:
"global investment governance series." » "global investment finance series.", "global investment insurance series.", "global internet governance series.", "social investment governance series.", "global investment governance system."
"global environmental performance reports." » "global environment performance reports.", "global environmental performance report."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("global investment governance series.") OR ("global environmental performance reports."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"global investment governance series.\") OR (\"global environmental performance reports.\"))".
• Removing quotes may allow a broader search: (( global investment governance series. ) OR ( global environmental performance reports. )).
• Adding a wildcard symbol may retrieve word variants: (("global investment governance series.") OR ("global environmental performance reports."))*.