Perhaps you should try some spelling variations:
teoria dia » teoria da, teoria de, teoria del
abierta y » abierta de, abierta en
1820 la » 1820 a, 1870 la, 1620 la
y 1820 » y 1825, a 1820, y 1821
mar de » mar del
dia d » dia de, dia a
17 de » 1 de, 12 de
1 17 » 1 1, 1 15, 1 10

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 y 1820 la teoria dia d ) OR ( Cabildo abiertas 1 17 de mar de 1837 ))~".
• Adding a wildcard symbol may retrieve word variants: (( Cabildo abierta y 1820 la teoria dia d ) OR ( Cabildo abiertas 1 17 de mar de 1837 ))*.