Perhaps you should try some spelling variations:
"nets communication issues" » "nets community issues", "nets communication india", "nets communication united", "lea's communication issues", "mass communication issues", "c's communication issues"
"class communication iran" » "mass communication iran", "plans communication iran", "crisis communication iran", "class communication iraq", "class communication ireland", "class communication brands"
"its cooperation history" » "its corporation history", "its federation history", "city cooperation history", "et cooperation history"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("class communication iran") or ("nets communication issues"))) or ("its cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("class communication iran") OR ("nets communication issues"))) OR ("its cooperation history")).
• Removing quotes may allow a broader search: (((( class communication iran ) or ( nets communication issues ))) or ( its cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("class communication iran") or ("nets communication issues"))) or ("its cooperation history"))*.