Perhaps you should try some spelling variations:
abierto al » abierta al, abierto ana, abierta a
de maria » de marzo, de marx
maria a » maria e, maria de, maria di
a 1820 » a 1920, a 1827, a 1860
al 30 » al 31
mar a » mar y
al 18 » al 15, al 10
18 de » 1 de, 12 de, 17 de

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( Cabildo abierto al 30 de mar a 1850 ) OR ( Cabildo abierto al 18 de maria a 1820 ))~".
• Adding a wildcard symbol may retrieve word variants: (( Cabildo abierto al 30 de mar a 1850 ) OR ( Cabildo abierto al 18 de maria a 1820 ))*.