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 a islas." » "literatura de e islas.", "literatura de las islas.", "literatura de al islam.", "literatura de la islas.", "literatura de _ islas."
"literatura _ e islam." » "literatura _ el islam.", "literatura _ e islas."

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 a islas.") OR ((("literatura o del islam.") OR ("literatura _ e islam."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura de a islas.\") OR (((\"literatura o del islam.\") OR (\"literatura _ e islam.\"))))*".
• Removing quotes may allow a broader search: (( literatura de a islas. ) OR ((( literatura o del islam. ) OR ( literatura _ e islam. ))))*.