Perhaps you should try some spelling variations:
anales socioeconomia » analisis socioeconomico, variables socioeconomicas, de socioeconomia
rural socioeconomia » rural socioeconomica, moral socioeconomica
bibliotecas anales » bibliotecas digitales
biblioteca rural » bibliotecas rurales, biblioteca aurea, biblioteca otras

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( biblioteca rural socioeconomia sevillana ) OR ( bibliotecas anales socioeconomia sevillana ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( biblioteca rural socioeconomia sevillana ) OR ( bibliotecas anales socioeconomia sevillana ))".
• Adding a wildcard symbol may retrieve word variants: (( biblioteca rural socioeconomia sevillana ) OR ( bibliotecas anales socioeconomia sevillana ))*.