Perhaps you should try some spelling variations:
campo perez » campos perez, camilo perez, crespo perez
edicion de » medicion de
del cambio » el cambio, de cambio
del campo » el campo
de campo » de cambio, el campo
ester la » este la, eter la, ester alba
la pau » la paz

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

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