Perhaps you should try some spelling variations:
"literatura da de isla." » "literatura de de isla.", "literatura a de isla.", "literatura d de isla.", "literatura la de isla.", "literatura ha de isla.", "literatura ma de isla."
"literatura da de isaac." » "literatura de de isaac.", "literatura a de isaac.", "literatura d de isaac.", "literatura la de isaac.", "literatura ha de isaac.", "literatura ma de isaac."
"literatura _ de islam." » "literatura _ del islam.", "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 da de isla.") OR ("literatura da de isaac."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura _ de islam.") OR ((("literatura da de isla.") OR ("literatura da de isaac."))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura _ de islam.\") or (((\"literatura da de isla.\") OR (\"literatura da de isaac.\"))))*".
• Removing quotes may allow a broader search: (( literatura _ de islam. ) or ((( literatura da de isla. ) OR ( literatura da de isaac. ))))*.