Perhaps you should try some spelling variations:
"national investment insurance issues." » "national investment finance issues.", "international investment insurance issues.", "capital investment insurance issues.", "national treatment insurance issues.", "national investment insurance values.", "national investment insurance based."
"real internet governance series." » "real international governance series.", "real internet governance system.", "real interest governance series.", "real interes governance series.", "create internet governance series."

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

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