Perhaps you should try some spelling variations:
"mass communication issues" » "mass community issues", "mass communication india", "mass communication united", "maps communication issues"
"c's communication israel" » "c's communication iran", "c's communication iraq", "c's telecommunication israel", "lea's communication israel", "class communication israel", "les communications 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: (((("c's communication israel") OR ("mass communication issues"))) OR ("u.s migration history"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"c's communication israel\") OR (\"mass communication issues\"))) OR (\"u.s migration history\"))*".
• Removing quotes may allow a broader search: (((( c's communication israel ) OR ( mass communication issues ))) OR ( u.s migration history ))*.