Perhaps you should try some spelling variations:
"literature latina el islam." » "literature latin el islam.", "literatura latina el islam.", "iteratura latina el islam.", "literature latina en islam."
"literatura en de isaac." » "literatura de de isaac.", "literatura espana de isaac."
"literatura fe la idea." » "literatura fue la idea.", "literatura de la idea.", "literatura e la idea.", "literatura fe a idea.", "literatura fe la ideas."

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 en de isaac.") or ((("literature latina el islam.") or ("literatura fe la idea."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("literatura en de isaac.") OR ((("literature latina el islam.") OR ("literatura fe la idea.")))).
• Removing quotes may allow a broader search: (( literatura en de isaac. ) or ((( literature latina el islam. ) or ( literatura fe la idea. )))).
• Adding a wildcard symbol may retrieve word variants: (("literatura en de isaac.") or ((("literature latina el islam.") or ("literatura fe la idea."))))*.