Perhaps you should try some spelling variations:
literatura debil » literatura del, literatura decimo, literatura de
literatura arabe » literatura breve, literatura de, literatura e
literatura a » literatura al, literatura e, literatura de
debil un » bebel un, debil a, debil el
un islam » el islam, e islam, al islam
e islas » el islam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( literatura debil un islam. ) OR ( ((literatura arabe) OR (literatura a)) e islas. ))~.
• Adding a wildcard symbol may retrieve word variants: (( literatura debil un islam. ) or ( ((literatura arabe) or (literatura a)) e islas. ))*.