Perhaps you should try some spelling variations:
literatura oral » literature moral, literatura a, literatura del
literatura arab » literature arab, literatura artes, literatura a
la literatura » la litterature, a literature
a literatura » a literature, y literatura, a literatur
agenda ii » agenda iii, agenda iv, agenda 21
1 agenda » _ agenda, 7 agenda, 3 agenda
agenda i » agenda a, agenda 6, agenda 2

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: (( 1 agenda i a literatura oral ) OR ( _ ((agenda ii) OR (agenda _)) la literatura arab )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( 1 agenda i a literatura oral ) or ( _ ((agenda ii) OR (agenda _)) la literatura arab ))".
• Adding a wildcard symbol may retrieve word variants: (( 1 agenda i a literatura oral ) or ( _ ((agenda ii) OR (agenda _)) la literatura arab ))*.