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", "unified national / 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 variational / security council") OR ("unified spatial / security council"))*.
• Removing quotes may allow a broader search: (( unified variational / security council ) or ( unified spatial / security council ))*.