Perhaps you should try some spelling variations:
"mass communication united" » "mass telecommunication united", "maps communication united"
"nets communication israel" » "nets communication issues", "nets communication iran", "nets communication iraq", "lea's communication israel", "c's communication israel", "les communications israel"
"2 migration history" » "der migration history"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("nets communication israel") or ("mass communication united"))) or ("2 migration history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nets communication israel") OR ("mass communication united"))) OR ("2 migration history")).
• Removing quotes may allow a broader search: (((( nets communication israel ) or ( mass communication united ))) or ( 2 migration history )).
• Adding a wildcard symbol may retrieve word variants: (((("nets communication israel") or ("mass communication united"))) or ("2 migration history"))*.