Perhaps you should try some spelling variations:
"u.s communications issues" » "u.s communication issues", "u.s communications studies", "u.s communications costs", "3.1 communications issues", "les communications issues", "nps communications issues"
"mass communication israel" » "mass communication issues", "mass communication iran", "mass communication iraq", "maps communication israel"
"u.s migration history" » "mass migration history", "does migration history", "1 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: (((("u.s communications issues") or ("mass communication israel"))) or ("u.s migration history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("u.s communications issues") OR ("mass communication israel"))) OR ("u.s migration history")).
• Removing quotes may allow a broader search: (((( u.s communications issues ) or ( mass communication israel ))) or ( u.s migration history )).
• Adding a wildcard symbol may retrieve word variants: (((("u.s communications issues") or ("mass communication israel"))) or ("u.s migration history"))*.