Perhaps you should try some spelling variations:
"nets communication issues" » "nets community issues", "nets communication india", "nets communication united", "lea's communication issues", "c's communication issues", "les communications issues"
"city cooperation history" » "city corporation history", "city federation history", "china cooperation history", "city corporations history"
"mass communication iraq" » "mass communication iran", "mass communication israel", "mass communication italy", "maps communication iraq"

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 iraq") OR ("nets communication issues"))) OR ("city cooperation history"))~.
• Removing quotes may allow a broader search: (((( mass communication iraq ) or ( nets communication issues ))) or ( city cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("mass communication iraq") or ("nets communication issues"))) or ("city cooperation history"))*.