Perhaps you should try some spelling variations:
"its communication history" » "its telecommunication history", "its communication sector", "its communication theory", "nets communication history", "c's communication history", "mass communication history"
"et cooperation history" » "et corporation history", "et federation history", "et cooperations history", "eu cooperation history", "2 cooperation history"
"jews colonization songs" » "jews colonization still", "jews colonization work", "jews decolonization notes", "its colonization songs", "mars colonization songs", "re colonization songs"

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

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