Perhaps you should try some spelling variations:
"la communication issues" » "la community issues", "la communication india", "la communication united", "data communications issues"
"et cooperation history" » "et corporation history", "et federation history", "et cooperations history", "eu cooperation history", "2 cooperation history"
"data communication iran" » "data communications iran", "data communication iraq", "data communication ireland", "data communication brands"

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

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