Perhaps you should try some spelling variations:
"u.s communication india" » "u.s communication media", "u.s communications media", "u.s communications india", "2.3 communication india", "3.2 communication india"
"class communication iran" » "mass communication iran", "plans communication iran", "crisis communication iran", "class communication iraq", "class communication ireland", "class communication brands"
"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: (((("u.s communication india") OR ("class communication iran"))) OR ("et cooperation history"))~.
• Removing quotes may allow a broader search: (((( u.s communication india ) or ( class communication iran ))) or ( et cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("u.s communication india") or ("class communication iran"))) or ("et cooperation history"))*.