Perhaps you should try some spelling variations:
coleccion practica » coleccion didactica
y academicos » los academicos, _ academic, y academia
la academica » la academia, lo academico, y academica
practica de » practicas de
y academico » y academica, lo academico, un academico
de cirugia » en cirugia, la 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 academico) OR (y academicos))) or (la academica)) mexicana de cirugia.~.
• If you are trying to use Boolean operators, they must be ALL CAPS: coleccion practica de ((((y academico) OR (y academicos))) OR (la academica)) mexicana de cirugia.*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "coleccion practica de ((((y academico) OR (y academicos))) or (la academica)) mexicana de cirugia.*".