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
mexicana en » mexicana de
y academia » la academia, _ academic

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 (y academicos))) or (y academia)) mexicana en cirugia.~.
• 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 en 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 en cirugia.".
• Adding a wildcard symbol may retrieve word variants: coleccion practica de ((((y academica) OR (y academicos))) or (y academia)) mexicana en cirugia.*.