Perhaps you should try some spelling variations:
"c's communication theory" » "c's communication technology", "lea's communication theory", "class communication theory", "mass communication theory"
"africa organization israel" » "african organizations israel", "service organization israel", "qaida organization israel", "africa organization issues", "africa organization asia", "africa colonization israel"
"its colonization songs" » "its colonization still", "its colonization work", "its decolonization notes", "anti colonization songs", "jews colonization songs", "mars colonization songs"

Try widening your search to All Fields.

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

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