Perhaps you should try some spelling variations:
ediciones de » condiciones de
crespo perez » ernesto perez, cueto perez, crespo pedro
edicion de » medicion de
de crespo » de cristo, a crespo, de cresta
caso ega » caso en, caso el, caso la
ega las » egea las, vega las, veiga las
la pau » la 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 de caso ega las pau ; ) OR ( ediciones de crespo perez la pau ; ))~.
• Adding a wildcard symbol may retrieve word variants: (( edicion de caso ega las pau ; ) or ( ediciones de crespo perez la pau ; ))*.