Perhaps you should try some spelling variations:
"unified variational / security council" » "mixed variational / security council", "field variational / security council"
"unified spatial / security council" » "unifying spatial / security council", "unified social / security council"

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 variational / security council"))) OR ("unified spatial / security council"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"unified national / security council\") OR (\"unified variational / security council\"))) or (\"unified spatial / security council\"))*".
• Removing quotes may allow a broader search: (((( unified national / security council ) OR ( unified variational / security council ))) or ( unified spatial / security council ))*.