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

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 ((la academicos) OR (a academicos)) mexico ((de cirugia) OR (la cirugia)).~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "coleccion practica de ((la academicos) OR (a academicos)) mexico ((de cirugia) or (la cirugia)).~".
• Adding a wildcard symbol may retrieve word variants: coleccion practica de ((la academicos) OR (a academicos)) mexico ((de cirugia) or (la cirugia)).*.