Perhaps you should try some spelling variations:
academica mexicana » academia mexicana, academica diana, economica mexicana
coleccion actas » coleccion artes, coleccion becas
coleccion aula » coleccion popular
la academica » la academia, lo academico, y academica
de cirugia » en cirugia
la cirugia » en 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 actas) or (coleccion aula)) de la academica mexicana ((de cirugia) OR (la cirugia)).~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((coleccion actas) OR (coleccion aula)) de la academica mexicana ((de cirugia) OR (la cirugia))..
• The words AND, OR and NOT may confuse the search; try adding quotes: "((coleccion actas) or (coleccion aula)) de la academica mexicana ((de cirugia) OR (la cirugia)).".
• Adding a wildcard symbol may retrieve word variants: ((coleccion actas) or (coleccion aula)) de la academica mexicana ((de cirugia) OR (la cirugia)).*.