Perhaps you should try some spelling variations:
"literatura al de isaac." » "literatura el de isaac.", "literatura del de isaac.", "literatura de de isaac.", "literatura al dr isaac."
"literatura e del islam." » "literatura de del islam.", "literatura en del islam.", "literatura del del islam.", "literatura 5e del islam.", "literatura y del islam."
"literatura e el islam." » "literatura de el islam.", "literatura en el islam.", "literatura del el islam.", "literatura es el islam."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura al de isaac.") or ((("literatura e del islam.") OR ("literatura e el islam."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura al de isaac.") OR ((("literatura e del islam.") OR ("literatura e el islam."))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura al de isaac.\") or (((\"literatura e del islam.\") OR (\"literatura e el islam.\"))))*".
• Removing quotes may allow a broader search: (( literatura al de isaac. ) or ((( literatura e del islam. ) OR ( literatura e el islam. ))))*.