Perhaps you should try some spelling variations:
"ley 15637 de 2015" » "ley 1563 de 2015", "ley 1537 de 2015", "ley 1437 de 2015"
"ley 15230 de 2016" » "ley 1523 de 2016", "ley 1530 de 2016", "ley 1563 de 2016", "ley 1330 de 2016"
"ley 1438 de 2015" » "ley 1448 de 2015", "ley 1437 de 2015", "ley 1098 de 2015"
"ley 2153 de 2012" » "ley 2155 de 2012", "ley 2113 de 2012", "ley 2158 de 2012", "ley 02183 de 2012"
"ley 2183 de 2012" » "ley 2184 de 2012", "ley 2186 de 2012", "ley 2113 de 2012"

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 15637 de 2015") or ("ley 1438 de 2015"))) or ((("ley 2153 de 2012") OR ("ley 2183 de 2012"))))) or ("ley 15230 de 2016"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("ley 15637 de 2015") OR ("ley 1438 de 2015"))) OR ((("ley 2153 de 2012") OR ("ley 2183 de 2012"))))) OR ("ley 15230 de 2016")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"ley 15637 de 2015\") or (\"ley 1438 de 2015\"))) or (((\"ley 2153 de 2012\") OR (\"ley 2183 de 2012\"))))) or (\"ley 15230 de 2016\"))".
• Removing quotes may allow a broader search: (((((( ley 15637 de 2015 ) or ( ley 1438 de 2015 ))) or ((( ley 2153 de 2012 ) OR ( ley 2183 de 2012 ))))) or ( ley 15230 de 2016 )).
• Adding a wildcard symbol may retrieve word variants: (((((("ley 15637 de 2015") or ("ley 1438 de 2015"))) or ((("ley 2153 de 2012") OR ("ley 2183 de 2012"))))) or ("ley 15230 de 2016"))*.