Perhaps you should try some spelling variations:
"literatura de un islam." » "literatura de el islam.", "literatura de al islam.", "literatura de _ islam."
"literatura de e islam." » "literatura de el islam.", "literatura de e islas.", "literatura de del islam.", "literatura de fe islam.", "literatura de _ islam."
"literatura de de isla." » "literatura de de isaac.", "literatura de fe isla.", "literatura de di isla."

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 un islam.") OR ("literatura de e islam."))) OR ("literatura de de isla."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"literatura de un islam.\") OR (\"literatura de e islam.\"))) or (\"literatura de de isla.\"))~".
• Removing quotes may allow a broader search: (((( literatura de un islam. ) OR ( literatura de e islam. ))) or ( literatura de de isla. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura de un islam.") OR ("literatura de e islam."))) or ("literatura de de isla."))*.