Perhaps you should try some spelling variations:
"mass communication issues" » "mass community issues", "mass communication india", "mass communication united", "maps communication issues"
"its colonization history" » "its communication history", "its organization history", "its cooperation history", "anti colonization history", "jews colonization history", "mars colonization history"
"mars communication iran" » "mass communications iran", "markets communication iran", "chairs communication iran", "mars communication iraq", "mars communication ireland", "mars communication brands"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mass communication issues") OR ("mars communication iran"))) OR ("its colonization history"))~.
• Removing quotes may allow a broader search: (((( mass communication issues ) or ( mars communication iran ))) or ( its colonization history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("mass communication issues") or ("mars communication iran"))) or ("its colonization history"))*.