Perhaps you should try some spelling variations:
"literatura breve de isaac." » "literatura en de isaac.", "literatura del de isaac.", "literatura e de isaac."
"literatura de x islam." » "literatura de _ islam.", "literatura de el islam.", "literatura de al islam.", "literatura del x islam.", "literatura de ex islam.", "literatura de ix 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura breve de isaac.") OR ((("literatura de x islam.") OR ("literatura de e islam."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"literatura breve de isaac.\") OR (((\"literatura de x islam.\") OR (\"literatura de e islam.\"))))*".
• Removing quotes may allow a broader search: (( literatura breve de isaac. ) OR ((( literatura de x islam. ) OR ( literatura de e islam. ))))*.