Perhaps you should try some spelling variations:
"its communication theory" » "its communication technology", "nets communication theory", "c's communication theory", "mass communication theory"
"africa organization asia" » "african organizations asia", "service organization asia", "qaida organization asia", "africa organization china", "africa organization a", "africa organization case"
"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 asia") or ("its colonization songs"))) or ("its communication theory"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("africa organization asia") OR ("its colonization songs"))) OR ("its communication theory")).
• Removing quotes may allow a broader search: (((( africa organization asia ) or ( its colonization songs ))) or ( its communication theory )).
• Adding a wildcard symbol may retrieve word variants: (((("africa organization asia") or ("its colonization songs"))) or ("its communication theory"))*.