Perhaps you should try some spelling variations:
"literatura mario de islam." » "literatura maria de islam.", "literatura mexico de islam.", "literatura emilio de islam.", "literatura mariano de islam.", "literatura mario del islam.", "literatura mario e islam.", "literatura mario de ilam."
"literatura en de isaac." » "literatura espana de isaac."
"literatura de de isla." » "literatura de fe isla.", "literatura de di isla."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("literatura mario de islam.") or ((("literatura en de isaac.") or ("literatura de de isla."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura mario de islam.") OR ((("literatura en de isaac.") OR ("literatura de de isla.")))).
• Removing quotes may allow a broader search: (( literatura mario de islam. ) or ((( literatura en de isaac. ) or ( literatura de de isla. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura mario de islam.") or ((("literatura en de isaac.") or ("literatura de de isla."))))*.