Perhaps you should try some spelling variations:
"literatura ma de isaac." » "literatura mas de isaac.", "literatura a de isaac.", "literatura maya de isaac.", "literatura ma del isaac.", "literatura la de isaac.", "literatura ha de isaac."
"literatura _ del islam." » "literatura _ el islam."
"literatura _ de islam." » "literatura _ de isla.", "literatura _ e islam.", "literatura _ de ilam."

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 islam.") or ("literatura _ del islam."))) or ("literatura ma de isaac."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("literatura _ de islam.") OR ("literatura _ del islam."))) OR ("literatura ma de isaac."))*.
• Removing quotes may allow a broader search: (((( literatura _ de islam. ) or ( literatura _ del islam. ))) or ( literatura ma de isaac. ))*.