Perhaps you should try some spelling variations:
"class communication ireland" » "class communication iceland", "class communication finland", "class communication iran", "plans communication ireland", "crisis communication ireland", "causes communication ireland"
"mass communication india" » "mass communication media", "mass communications media", "maps communication india"
"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: (((("mass communication india") OR ("class communication ireland"))) OR ("u.s migration history"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"mass communication india\") OR (\"class communication ireland\"))) OR (\"u.s migration history\"))*".
• Removing quotes may allow a broader search: (((( mass communication india ) OR ( class communication ireland ))) OR ( u.s migration history ))*.