Perhaps you should try some spelling variations:
archivo historico » archivio storico, archivs history, archiving historical
archive history » archives history, archivs history, archival history
la defensa » la defense, a defense, la depense

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: ((archivo historico) OR (archive history)) de la defensa nacional (mexico).
• Adding a wildcard symbol may retrieve word variants: ((archivo historico) or (archive history)) de la defensa nacional (mexico)*.