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"
"de cooperation still" » "de cooperation scale", "de cooperation state", "de cooperation studies", "2 cooperation still", "trade cooperation still", "area cooperation still"
"3 migration history" » "2 migration history", "der migration 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 ("de cooperation still"))) OR ("3 migration history"))~.
• Removing quotes may allow a broader search: (((( mars communication israel ) or ( de cooperation still ))) or ( 3 migration history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("mars communication israel") or ("de cooperation still"))) or ("3 migration history"))*.