Perhaps you should try some spelling variations:
abierta a » abierta y, abiertas 1, abierta en
de cancer » del cancer
cancer c » cancer y, cancer a, cancer de
a 1820 » a 1920, a 1850, a 1827
c 1860 » c 1870, a 1860, j 1860
11 de » 12 de, 16 de
mar a » mar y
de 17 » de 15, de 13, de 77
17 de » 1 de, 12 de
a 11 » 9 11, a 10, v 11

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 abierta a 11 de mar a 1820 ) OR ( Cabildo abierta de 17 de cancer c 1860 ))~".
• Adding a wildcard symbol may retrieve word variants: (( Cabildo abierta a 11 de mar a 1820 ) OR ( Cabildo abierta de 17 de cancer c 1860 ))*.