Perhaps you should try some spelling variations:
publicaciones peri » publicaciones de, publicaciones seriadas, publicaciones periodicas
peri instituto » para instituto, del instituto, el instituto
tecnologico y » tecnologica y, tecnologica de, tecnologica en
biologico y » biologicos y, biologica y, biologico de
mineral de » general de, mineria de, mineral 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 peri instituto ((tecnologico y) or (biologico y)) mineral de espana ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: publicaciones peri instituto ((tecnologico y) OR (biologico y)) mineral de espana ;.
• Adding a wildcard symbol may retrieve word variants: publicaciones peri instituto ((tecnologico y) or (biologico y)) mineral de espana ;*.