Perhaps you should try some spelling variations:
condicion de » condiciones de
edicion de » medicion de
campo per » campo der, campo perez, campo para
campus de » campos de, corpus de
de campo » de cambio, el campo
per la » poder la
la pau » la paz
pan » plan

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: (( condicion de campo per la pau ; ) OR ( edicion de ((campus de) OR (campo de)) el pan ; ))~.
• Adding a wildcard symbol may retrieve word variants: (( condicion de campo per la pau ; ) or ( edicion de ((campus de) or (campo de)) el pan ; ))*.