Perhaps you should try some spelling variations:
"class communication issues" » "class community issues", "class communication india", "class communication united", "plans communication issues", "crisis communication issues", "causes communication issues"
"_ colonization israel" » "_ communication israel", "_ colonization still", "_ colonization history"
"mass communication iran" » "mass communication iraq", "mass communication ireland", "mass communication brands", "maps communication iran"

Try widening your search to All Fields.

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

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