Perhaps you should try some spelling variations:
abierto al » abierta al, abierto ana, abierta a
de 1810 » de 1880
a 1820 » a 1920, a 1850, a 1827
mar de » mar del
11 de » 12 de
mar a » mar y
al 17 » al 15, al 10, al 18
17 de » 1 de, 12 de
y 11 » y 116, 9 11, v 11

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( Cabildo aborto y 11 de mar a 1820 ) OR ( Cabildo abierto al 17 de mar de 1810 ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( Cabildo aborto y 11 de mar a 1820 ) OR ( Cabildo abierto al 17 de mar de 1810 ))".
• Adding a wildcard symbol may retrieve word variants: (( Cabildo aborto y 11 de mar a 1820 ) OR ( Cabildo abierto al 17 de mar de 1810 ))*.