Perhaps you should try some spelling variations:
"mars communication israel" » "mars communication issues", "mars communication iran", "mars communication iraq", "mass communication israel", "mass communications israel", "markets communication israel"
"la cooperation studies" » "la cooperation series", "la cooperation sources", "la cooperation implies", "2 cooperation studies", "gulf cooperation studies", "area cooperation studies"
"its federation history" » "its migration history", "les federations history", "_ federation history", "3 federation history"

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: (((("mars communication israel") OR ("la cooperation studies"))) OR ("its federation history"))~.
• Removing quotes may allow a broader search: (((( mars communication israel ) or ( la cooperation studies ))) or ( its federation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("mars communication israel") or ("la cooperation studies"))) or ("its federation history"))*.