Perhaps you should try some spelling variations:
"literatura arabe de isaac." » "literatura breve de isaac.", "literatura e de isaac.", "literatura al de isaac.", "literatura caribe de isaac.", "literatura sabe de isaac.", "literatura arabes e isaac."
"literatura de de islam." » "literatura de del islam.", "literatura de de isla.", "literatura de de ilam.", "literatura de de islas.", "literatura de ddel islam.", "literatura de fe islam.", "literatura de di islam."
"literatura de e islam." » "literatura de el islam.", "literatura de e islas.", "literatura de del islam.", "literatura de fe islam.", "literatura de _ islam."

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