Perhaps you should try some spelling variations:
"unified national / security council" » "unified variational / security council"
"unifying spatial / security council" » "quantifying spatial / security council", "unifying initial / security council", "identifying spatial / security council"
"unified spatial / security council" » "unified social / security council"

Try widening your search to All Fields.

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("unified national / security council") OR ((("unified spatial / security council") OR ("unifying spatial / security council")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"unified national / security council\") or (((\"unified spatial / security council\") OR (\"unifying spatial / security council\"))))".
• Removing quotes may allow a broader search: (( unified national / security council ) or ((( unified spatial / security council ) OR ( unifying spatial / security council )))).
• Adding a wildcard symbol may retrieve word variants: (("unified national / security council") or ((("unified spatial / security council") OR ("unifying spatial / security council"))))*.