Perhaps you should try some spelling variations:
coleccion practica » coleccion didactica
practica de » practicas de
y academica » y academicos, _ academic, red academica
y academico » y academicos, lo academico, un academico
y academia » la academia, _ academic
de cirugia » en cirugia, la 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 ((((y academica) OR (y academia))) OR (y academico)) mexicana de cirugia.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "coleccion practica de ((((y academica) OR (y academia))) or (y academico)) mexicana de cirugia.~".
• Adding a wildcard symbol may retrieve word variants: coleccion practica de ((((y academica) OR (y academia))) or (y academico)) mexicana de cirugia.*.