Perhaps you should try some spelling variations:
ediciones del » ediciones de, edicion del, condiciones del
del campos » del campo, de campos, del campus
campos en » campos el, campos e, campos del
campo el » campo del, campo de, campo y
campo en » campo de, campo y
lai pau » las pau
la pau » la paz

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: (( ediciones del campos en la pau ; ) OR ( medicina de ((campo el) OR (campo en)) lai pau ; ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ediciones del campos en la pau ; ) or ( medicina de ((campo el) OR (campo en)) lai pau ; ))~".
• Adding a wildcard symbol may retrieve word variants: (( ediciones del campos en la pau ; ) or ( medicina de ((campo el) OR (campo en)) lai pau ; ))*.