Perhaps you should try some spelling variations:
coleccion practica » coleccion didactica
academico mexico » academicos mexico, academico excmo, academico leido
lo academico » los academicos, ano academico, del academico
practica de » practicas de
de cirugia » la cirugia
de lo » de la

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