Perhaps you should try some spelling variations:
"literature arab _ isla." » "literatura arabe _ isla.", "literature early _ isla.", "literatura para _ isla.", "literature arab _ islas."
"literatura del e isaac." » "literatura de e isaac.", "literatura en e isaac.", "literatura del de isaac.", "literatura del en isaac.", "literatura del _ isaac.", "literatura del v isaac.", "literatura del c isaac."
"literatura e de islam." » "literatura de de islam.", "literatura en de islam.", "literatura e del islam.", "literatura e de isla.", "literatura e e islam.", "literatura y de islam.", "literatura _ de islam.", "literatura e de islasm."

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