Perhaps you should try some spelling variations:
coleccion practicas » coleccion practica, coleccion didactica, coleccion actas
los academicos » textos academicos
del academico » ano academico, lo academico
y academico » y academicos, y academica, lo academico
e cirugia » en cirugia, de cirugia, y cirugia
excmo e » excmo sr

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 practicas de ((((y academico) OR (los academicos))) OR (del academico)) excmo e cirugia.~.
• Adding a wildcard symbol may retrieve word variants: coleccion practicas de ((((y academico) or (los academicos))) or (del academico)) excmo e cirugia.*.