Perhaps you should try some spelling variations:
"c's communication issues" » "c's community issues", "c's communication india", "c's communication united", "lea's communication issues", "class communication issues", "mass communication issues"
"mars cooperation history" » "mars corporation history", "mars federation history", "early cooperation history", "area cooperation history", "arab cooperation history"
"anti colonization israel" » "anti communication israel", "anti colonization still", "anti colonization history", "its colonization israel", "africa colonization israel", "_ colonization israel"

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

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