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"
"jews cooperation series" » "jews cooperation theories", "jews cooperation sources", "jews cooperation studies", "de cooperation series", "et cooperation series", "eu cooperation series"
"its federation history" » "its migration history", "les federations history", "_ federation history", "3 federation history"

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

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