Perhaps you should try some spelling variations:
abierto el » abierto del, abierto en, abierto al
de bal » de bar, le bal, de babel
1 1821 » 1 1801, y 1821
a 1820 » a 1920, a 1850, a 1827
11 de » 12 de, 17 de, 16 de
bal 1 » bal a
mar a » mar y
1 11 » 10 11, 15 11, 1 1
1 de » y 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 abiertas 1 11 de bal 1 1821 ) OR ( Cabildo abierto el 1 de mar a 1820 ))~".
• Adding a wildcard symbol may retrieve word variants: (( Cabildo abiertas 1 11 de bal 1 1821 ) OR ( Cabildo abierto el 1 de mar a 1820 ))*.