Perhaps you should try some spelling variations:
"ley 1437 de 2015" » "ley 1480 de 2015", "ley 1448 de 2015"
"ley 2153 de 2012" » "ley 2155 de 2012", "ley 2113 de 2012", "ley 23 de 2012", "ley 2183 de 2012", "ley 02183 de 2012"
"ley 2158 de 2012" » "ley 2155 de 2012", "ley 1581 de 2012", "ley 256 de 2012", "ley 2150 de 2012", "ley 2157 de 2012"
"ley 1530 de 2016" » "ley 1537 de 2016", "ley 130 de 2016", "ley 1930 de 2016", "ley 1330 de 2016", "ley 1500 de 2016", "ley 153 de 2016"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("ley 1437 de 2015") or ((("ley 2153 de 2012") or ((("ley 2158 de 2012") OR ("ley 115 de 2012"))))))) or ("ley 1530 de 2016"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ley 1437 de 2015") OR ((("ley 2153 de 2012") OR ((("ley 2158 de 2012") OR ("ley 115 de 2012"))))))) OR ("ley 1530 de 2016")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"ley 1437 de 2015\") or (((\"ley 2153 de 2012\") or (((\"ley 2158 de 2012\") OR (\"ley 115 de 2012\"))))))) or (\"ley 1530 de 2016\"))".
• Removing quotes may allow a broader search: (((( ley 1437 de 2015 ) or ((( ley 2153 de 2012 ) or ((( ley 2158 de 2012 ) OR ( ley 115 de 2012 ))))))) or ( ley 1530 de 2016 )).
• Adding a wildcard symbol may retrieve word variants: (((("ley 1437 de 2015") or ((("ley 2153 de 2012") or ((("ley 2158 de 2012") OR ("ley 115 de 2012"))))))) or ("ley 1530 de 2016"))*.