Perhaps you should try some spelling variations:
academica mexicana » academia mexicana, academica diana, economica mexicana
coleccion practica » coleccion didactica
a cirugia » la cirugia, en cirugia, de cirugia
y cirugia » en cirugia, de cirugia, la cirugia
de y » de _, de 3, fe y
de a » de la, de _

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) or (de a)) academica mexicana ((a cirugia) OR (y cirugia)).~.
• If you are trying to use Boolean operators, they must be ALL CAPS: coleccion practica ((de y) OR (de a)) academica mexicana ((a cirugia) OR (y cirugia))..
• The words AND, OR and NOT may confuse the search; try adding quotes: "coleccion practica ((de y) or (de a)) academica mexicana ((a cirugia) OR (y cirugia)).".
• Adding a wildcard symbol may retrieve word variants: coleccion practica ((de y) or (de a)) academica mexicana ((a cirugia) OR (y cirugia)).*.