Perhaps you should try some spelling variations:
abierto al » abierta al, abierto ana, abierta a
de 1800 » del 1800, de 1880, de 1805
r 1920 » a 1920, r 1923, b 1920
mar de » mar del
al 18 » al 15, al 10
18 de » 1 de, 12 de, 17 de
mar r » mar a, mar y
1 18 » 17 18, 1 1, 1 15

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 18 de mar r 1920 ) OR ( Cabildo abiertas 1 18 de mar de 1800 ))~".
• Adding a wildcard symbol may retrieve word variants: (( Cabildo abierto al 18 de mar r 1920 ) OR ( Cabildo abiertas 1 18 de mar de 1800 ))*.