Perhaps you should try some spelling variations:
coleccion practica » coleccion didactica
academica mexicana » academia mexicana, academica diana, polemica mexicana
economica mexicana » economia mexicana, economico mexicano, economica mexico
practica de » practicas de
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 la ((academica mexicana) OR (economica mexicana)) de cirugia.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "coleccion practica de la ((academica mexicana) OR (economica mexicana)) de cirugia.".
• Adding a wildcard symbol may retrieve word variants: coleccion practica de la ((academica mexicana) OR (economica mexicana)) de cirugia.*.