Perhaps you should try some spelling variations:
campus poder » campus per, campus de, cambio poder
edicion de » medicion de
de campus » del campus, de campos, de campo
un camino » el camino
poder la » poder en, poder de, poder el
un campo » un cambio, un caso, el campo
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 campus poder la pau ; ) or ( mediacion ((un campo) or (un camino)) poder la pau ; ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( edicion de campus poder la pau ; ) OR ( mediacion ((un campo) OR (un camino)) poder la pau ; )).
• Adding a wildcard symbol may retrieve word variants: (( edicion de campus poder la pau ; ) or ( mediacion ((un campo) or (un camino)) poder la pau ; ))*.