Perhaps you should try some spelling variations:
"its communication theory" » "its communication technology", "nets communication theory", "c's communication theory", "mass communication theory"
"africa colonization still" » "arrival colonization still", "africa cooperation still", "africa organization still", "africa colonization failed", "africa colonization israel"
"anti colonization songs" » "anti colonization work", "anti decolonization notes", "its colonization songs", "_ colonization songs", "anti colonialism songs"

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

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