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