Perhaps you should try some spelling variations:
coleccion practica » coleccion didactica
los academicos » textos academicos
lo academicos » lo academico, y academicos, de academicos
practica de » practicas de
de cirugia » en cirugia, la cirugia
mexico de » mexicano de

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: coleccion practica de ((lo academicos) OR (los academicos)) mexico de cirugia.~.
• Adding a wildcard symbol may retrieve word variants: coleccion practica de ((lo academicos) or (los academicos)) mexico de cirugia.*.