Perhaps you should try some spelling variations:
"literatura del eros isla." » "literatura de eros isla.", "literatura del eros la.", "literatura del error isla.", "literatura del ebro isla."
"literatura en el islam." » "literatura de el islam.", "literatura espana el islam.", "literatura den el islam."
"literatura e de isaac." » "literatura de de isaac.", "literatura y de isaac.", "literatura _ de 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 e de isaac.") or ((("literatura en el islam.") or ("literatura del eros isla."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura e de isaac.") OR ((("literatura en el islam.") OR ("literatura del eros isla.")))).
• Removing quotes may allow a broader search: (( literatura e de isaac. ) or ((( literatura en el islam. ) or ( literatura del eros isla. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura e de isaac.") or ((("literatura en el islam.") or ("literatura del eros isla."))))*.