Perhaps you should try some spelling variations:
"its communication united" » "its telecommunication united", "c's communication united", "mass communication united", "les communications united"
"nets communication israel" » "nets communication issues", "nets communication iran", "nets communication iraq", "lea's communication israel", "mass communication israel", "c's communication israel"
"et cooperation history" » "et corporation history", "et federation history", "et cooperations history", "eu cooperation history", "2 cooperation 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 united") OR ("nets communication israel"))) OR ("et cooperation history"))~.
• Removing quotes may allow a broader search: (((( its communication united ) or ( nets communication israel ))) or ( et cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("its communication united") or ("nets communication israel"))) or ("et cooperation history"))*.