Perhaps you should try some spelling variations:
"pro communication history" » "pro telecommunication history", "pro communication sector", "pro communication theory", "prone communication history", "ngo communication history", "proper communication history"
"_ colonization failed" » "_ colonization still", "_ organizations failed"
"anti colonization songs" » "anti colonization still", "anti colonization work", "anti decolonization notes", "its colonization songs", "africa colonization songs", "anti colonialism 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: (((("_ colonization failed") or ("anti colonization songs"))) or ("pro communication history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("_ colonization failed") OR ("anti colonization songs"))) OR ("pro communication history")).
• Removing quotes may allow a broader search: (((( _ colonization failed ) or ( anti colonization songs ))) or ( pro communication history )).
• Adding a wildcard symbol may retrieve word variants: (((("_ colonization failed") or ("anti colonization songs"))) or ("pro communication history"))*.