Perhaps you should try some spelling variations:
de covarianza » de varianza
mario del » maria del, marco del, mario de
aborto a » aborto y, aborto _, aborto en
de mario » de marzo, de maria, de marco
del 13 » del 11, del 16
15 de » 1 de, 12 de, 17 de
03 40 » 03 42, 02 40, 03 47
a 15 » al 15, 1 15, a 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 aborto a 15 de covarianza 03 40 ) OR ( Cabildo abierta de 15 de mario del 13 ))~".
• Adding a wildcard symbol may retrieve word variants: (( Cabildo aborto a 15 de covarianza 03 40 ) OR ( Cabildo abierta de 15 de mario del 13 ))*.