Perhaps you should try some spelling variations:
medicion de » medicina de
marta luisa » maria luisa, mirta luisa, maria lluisa
luisa perez » luis perez
edicion y » edicion de
fe marta » de marta, e marta, fe maria
y cambio » el cambio, de cambio
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: (( medicion de fe marta luisa perez ; ) or ( edicion y cambio de la pau ; ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( medicion de fe marta luisa perez ; ) OR ( edicion y cambio de la pau ; )).
• Adding a wildcard symbol may retrieve word variants: (( medicion de fe marta luisa perez ; ) or ( edicion y cambio de la pau ; ))*.