Perhaps you should try some spelling variations:
instituto pedagogica » instituto pedagogico, instituciones pedagogicas, actitud pedagogica
publicaciones del » publicaciones de, publicaciones peri, publicacion de
pedagogica y » pedagogia y, pedagogica de, pedagogica en
mineral de » general de, mineria de
minera de » mineria de, minerales de
mineral y » general y

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

• Performing a fuzzy search may retrieve terms with similar spellings: publicaciones del instituto pedagogica y ((minera de) or (((mineral de) OR (mineral y)))) espana ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: publicaciones del instituto pedagogica y ((minera de) OR (((mineral de) OR (mineral y)))) espana ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "publicaciones del instituto pedagogica y ((minera de) or (((mineral de) OR (mineral y)))) espana ;".
• Adding a wildcard symbol may retrieve word variants: publicaciones del instituto pedagogica y ((minera de) or (((mineral de) OR (mineral y)))) espana ;*.