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