Perhaps you should try some spelling variations:
literatura alemana » literatura espana, literatura castellana, literatura colombiana
literatura a » literatura al, literatura e, literatura de
alemana y » alemana de, alemana en
un islam » el islam, e islam, _ islam
al islam » el islam, del islam, e islam
y islam » e islam, _ islam, 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 a ((un islam) OR (al islam)). ) or ( literatura alemana y islam. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( literatura a ((un islam) OR (al islam)). ) OR ( literatura alemana y islam. )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( literatura a ((un islam) OR (al islam)). ) or ( literatura alemana y islam. ))".
• Adding a wildcard symbol may retrieve word variants: (( literatura a ((un islam) OR (al islam)). ) or ( literatura alemana y islam. ))*.