Perhaps you should try some spelling variations:
"u.s communication issues" » "u.s community issues", "u.s communication india", "u.s communication united", "u.s communications issues", "2.3 communication issues", "3.2 communication issues"
"lea's communication israel" » "lea's communication iran", "lea's communication iraq", "lea's telecommunication israel", "mass communication israel", "crisis communication israel", "leadership 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: (((("u.s communication issues") or ("lea's communication israel"))) or ("its cooperation history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("u.s communication issues") OR ("lea's communication israel"))) OR ("its cooperation history")).
• Removing quotes may allow a broader search: (((( u.s communication issues ) or ( lea's communication israel ))) or ( its cooperation history )).
• Adding a wildcard symbol may retrieve word variants: (((("u.s communication issues") or ("lea's communication israel"))) or ("its cooperation history"))*.