Perhaps you should try some spelling variations:
ediciones de » condiciones de
campo perez » campos perez, camilo perez, crespo perez
edicion de » medicion de
caso egea » caso ega, caso eta
de campo » de cambio, el campo
egea la » egea las, egea ana, egea los
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: (( edicion de caso egea la pau ; ) OR ( ediciones de campo perez la pau ; ))~.
• Adding a wildcard symbol may retrieve word variants: (( edicion de caso egea la pau ; ) or ( ediciones de campo perez la pau ; ))*.