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
geologico y » geologia y, biologico y
oral espana » rural espana, local espana, vial espana
miedo oral » miedo normal, miedo al, miedo real

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: publicaciones peri instituto ((geologico y) OR (tecnologico y)) miedo oral espana ;~.
• Adding a wildcard symbol may retrieve word variants: publicaciones peri instituto ((geologico y) or (tecnologico y)) miedo oral espana ;*.