Perhaps you should try some spelling variations:
crespo perez » ernesto perez, cueto perez, crespo pedro
cambio perez » camilo perez, campo perez, dario perez
cambio para » cambiar para
medicina d » medicina de, medicina dr, medicina _
edicion y » edicion de
d crespo » a crespo, j crespo
a paz » la paz, ma paz, y 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: (( edicion y ((cambio perez) OR (cambio para)) el pan ; ) OR ( medicina d crespo perez a paz ; ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( edicion y ((cambio perez) OR (cambio para)) el pan ; ) or ( medicina d crespo perez a paz ; ))~".
• Adding a wildcard symbol may retrieve word variants: (( edicion y ((cambio perez) OR (cambio para)) el pan ; ) or ( medicina d crespo perez a paz ; ))*.