Perhaps you should try some spelling variations:
campos perez » campo perez, campos perales, campos mendez
ediciones de » edicion de, condiciones de
perez jean » perez juan, perez joan, perez adan
edicion e » edicion de, edicion en, medicion e
de campo » de cambio, el campo
e campos » de campos, en campos, y campos
der del » poder del, deber del, iser del
ser del » ser de, ser el
paul » raul

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ediciones de campo ((der del) OR (ser del)) plazo ; ) or ( edicion e campos perez jean paul ; ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ediciones de campo ((der del) OR (ser del)) plazo ; ) OR ( edicion e campos perez jean paul ; )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ediciones de campo ((der del) OR (ser del)) plazo ; ) or ( edicion e campos perez jean paul ; ))".
• Adding a wildcard symbol may retrieve word variants: (( ediciones de campo ((der del) OR (ser del)) plazo ; ) or ( edicion e campos perez jean paul ; ))*.