Perhaps you should try some spelling variations:
de covarianza » de varianza
covarianza 05 » carranza 05
y 1822 » y 1825, 2 1822, y 122
de mas » de masa, de mar, de max
05 19 » 05 49, 05 59, 05 39
de 16 » de 15, de 13, de 56
16 de » 1 de, 12 de, 17 de
mas y » las y, mar y

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 aborto y 1822 de covarianza 05 19 ) OR ( Cabildo abierta de 16 de mas y 1930 ))~".
• Adding a wildcard symbol may retrieve word variants: (( Cabildo aborto y 1822 de covarianza 05 19 ) OR ( Cabildo abierta de 16 de mas y 1930 ))*.