Perhaps you should try some spelling variations:
"literatura parada de isla." » "literatura para de isla.", "literatura comparada de isla.", "literatura peruana de isla.", "literatura parada d isla.", "literatura parda de isla.", "literatura prada de isla."
"literatura _ del islam." » "literatura _ el islam."
"literatura de de isaac." » "literatura de fe isaac.", "literatura de di isaac."

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