Perhaps you should try some spelling variations:
ley 1537 » ley 1437, ley 1581, ley 1438
ley 2153 » ley 2155, ley 2113, ley 2158
ley 1010 » ley 100, ley 115, ley 1480
ley 1014 » ley 1314, ley 100, ley 115
ley 1090 » ley 100, ley 1480
ley 1098 » ley 100
1537 de » 1437 de, 153 de, 137 de
2153 de » 2183 de, 2155 de, 02183 de
de 2012 » de 2016

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( ley 1537 de 2015 ) or ( ley 2153 de 2012 ))) or ( ((((ley 1010) or (ley 1014))) or (((ley 1090) OR (ley 1098)))) de 2012 ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( ley 1537 de 2015 ) OR ( ley 2153 de 2012 ))) OR ( ((((ley 1010) OR (ley 1014))) OR (((ley 1090) OR (ley 1098)))) de 2012 )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( ley 1537 de 2015 ) or ( ley 2153 de 2012 ))) or ( ((((ley 1010) or (ley 1014))) or (((ley 1090) OR (ley 1098)))) de 2012 ))".
• Adding a wildcard symbol may retrieve word variants: (((( ley 1537 de 2015 ) or ( ley 2153 de 2012 ))) or ( ((((ley 1010) or (ley 1014))) or (((ley 1090) OR (ley 1098)))) de 2012 ))*.