Perhaps you should try some spelling variations:
"nps communication issues" » "nps community issues", "nps communication india", "nps communication united", "nps communications issues", "c's communication issues", "mass communication issues"
"nets communication israel" » "nets communication iran", "nets communication iraq", "nets telecommunication israel", "lea's communication israel", "mass communication israel", "c's communication israel"
"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: (((("nps communication issues") or ("nets communication israel"))) or ("its cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nps communication issues") OR ("nets communication israel"))) OR ("its cooperation history")).
• Removing quotes may allow a broader search: (((( nps communication issues ) or ( nets communication israel ))) or ( its cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("nps communication issues") or ("nets communication israel"))) or ("its cooperation history"))*.