Perhaps you should try some spelling variations:
coleccion practica » coleccion didactica
academica mexicana » academia mexicana, academica diana, economica mexicana
academica durante » academico docente, economica durante, america durante
practica de » practicas de
de cirugia » en cirugia, la cirugia
de a » de la, 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 a ((academica mexicana) OR (academica durante)) de cirugia.~.
• Adding a wildcard symbol may retrieve word variants: coleccion practica de a ((academica mexicana) or (academica durante)) de cirugia.*.