Perhaps you should try some spelling variations:
"literatura o de islas." » "literatura e de islas.", "literatura a de islas.", "literatura con de islas.", "literatura o e islas.", "literatura o de isla.", "literatura o dos islas.", "literatura y de islas."
"literatura _ de isaias." » "literatura _ de indias.", "literatura _ de isaac."
"literatura de de islam." » "literatura de del islam.", "literatura de de isla.", "literatura de e islam.", "literatura de fe islam.", "literatura de di islam."

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: (((("literatura o de islas.") or ("literatura _ de isaias."))) or ("literatura de de islam."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura o de islas.") OR ("literatura _ de isaias."))) OR ("literatura de de islam.")).
• Removing quotes may allow a broader search: (((( literatura o de islas. ) or ( literatura _ de isaias. ))) or ( literatura de de islam. )).
• Adding a wildcard symbol may retrieve word variants: (((("literatura o de islas.") or ("literatura _ de isaias."))) or ("literatura de de islam."))*.