Perhaps you should try some spelling variations:
ernesto perez » crespo perez
del martinez » real martinez, gil martinez, l martinez
medicion el » medicion del, mediacion el, medicion e
medicion de » medicina de
campo del » campo de, campos de, campo en
el campo » el cambio, el camino

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 el campo del martinez de ; ) OR ( medicion de ernesto perez la paz ; ))~.
• Adding a wildcard symbol may retrieve word variants: (( medicion el campo del martinez de ; ) or ( medicion de ernesto perez la paz ; ))*.