Perhaps you should try some spelling variations:
medicion el » medicion del, mediacion el, medicion e
del cambio » el cambio, de cambio
campus per » campus de
del campo » el campo, de campo
el campus » el campo, el corpus
poder la » poder en, poder de, poder el
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: (( medicion ((del campo) OR (del cambio)) poder la pau ; ) OR ( medicion el campus per la pau ; ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( medicion ((del campo) OR (del cambio)) poder la pau ; ) or ( medicion el campus per la pau ; ))~".
• Adding a wildcard symbol may retrieve word variants: (( medicion ((del campo) OR (del cambio)) poder la pau ; ) or ( medicion el campus per la pau ; ))*.