Perhaps you should try some spelling variations:
instrumento pedagogico » instituto pedagogico, instrumento biologico, instrumento didactico
publicacion e » publicacion de, publicacion en, publicacion y
e instrumento » e instrumentos, de instrumentos, un instrumento
pedagogico y » pedagogicos y, pedagogica y, pedagogico de
y mineria » y miseria, la mineria, de mineria

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

• Performing a fuzzy search may retrieve terms with similar spellings: publicacion e instrumento pedagogico y mineria de espana ;~.
• Adding a wildcard symbol may retrieve word variants: publicacion e instrumento pedagogico y mineria de espana ;*.