Perhaps you should try some spelling variations:
"nets communication issues" » "nets communication india", "nets communication united", "nets communication italy", "lea's communication issues", "mass communication issues", "c's communication issues"
"et cooperation history" » "et corporation history", "et federation history", "et cooperations history", "eu cooperation history", "2 cooperation history"
"its community issues" » "icts community issues", "city community issues", "arts community issues"

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