Perhaps you should try some spelling variations:
"literature arab de isaac." » "literatura arabe de isaac.", "literature early de isaac.", "literatura para de isaac.", "literature arabe de isaac.", "literature aras de isaac.", "literature arabes de isaac."
"literatura a el islam." » "literatura al el islam.", "literatura e el islam.", "literatura en el islam.", "literatura y el islam.", "literatura o el islam.", "literatura 2 el islam."
"literatura de de iselam." » "literatura de de islam.", "literatura de de isla.", "literatura de de ilam.", "literatura de fe iselam.", "literatura de di iselam."

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 de iselam.") OR ("literatura a el islam."))) OR ("literature arab de isaac."))~.
• Removing quotes may allow a broader search: (((( literatura de de iselam. ) or ( literatura a el islam. ))) or ( literature arab de isaac. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("literatura de de iselam.") or ("literatura a el islam."))) or ("literature arab de isaac."))*.