Perhaps you should try some spelling variations:
coleccion practica » coleccion didactica
los academicos » textos academicos
practica de » practicas de
y academica » y academia, y academico, y academicos
mexicana la » mexicana a, mexicano la, mexicana una
la cirugia » en cirugia, de cirugia

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: coleccion practica de ((y academica) or (los academicos)) mexicana la cirugia.~.
• If you are trying to use Boolean operators, they must be ALL CAPS: coleccion practica de ((y academica) OR (los academicos)) mexicana la cirugia..
• Adding a wildcard symbol may retrieve word variants: coleccion practica de ((y academica) or (los academicos)) mexicana la cirugia.*.