Perhaps you should try some spelling variations:
"its communication israel" » "its communication iran", "its communication iraq", "its telecommunication israel", "nets communication israel", "c's communication israel", "mass communication israel"
"class communication issues" » "class community issues", "class communication india", "class communication united", "mass communication issues", "plans communication issues", "crisis communication issues"
"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.

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