Perhaps you should try some spelling variations:
"literatura o del islam." » "literatura e del islam.", "literatura a del islam.", "literatura con del islam.", "literatura o el islam.", "literatura y del islam.", "literatura o de islam."
"literatura _ de islas." » "literatura _ e islas.", "literatura _ de isla.", "literatura _ de islam."
"literatura de di isaac." » "literatura de de isaac.", "literatura de _ isaac.", "literatura de c isaac.", "literatura de mi isaac.", "literatura de si isaac."

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

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