Perhaps you should try some spelling variations:
"ley 19437 de 2015-colombia" » "ley 1437 de 2015-colombia", "ley 1943 de 2015-colombia", "ley 1.437 de 2015-colombia"
"ley 1443 de 2017-colombia" » "ley 1448 de 2017-colombia", "ley 1943 de 2017-colombia", "ley 1413 de 2017-colombia", "ley 1443 de 2012-colombia", "ley 1443 de 2011-colombia"
"ley 1438 de 2016-colombia" » "ley 1448 de 2016-colombia", "ley 1437 de 2016-colombia", "ley 1098 de 2016-colombia", "ley 14378 de 2016-colombia", "ley 19438 de 2016-colombia", "ley 14138 de 2016-colombia"
"ley 143 de 2016-colombia" » "ley 1437 de 2016-colombia", "ley 1943 de 2016-colombia", "ley 1413 de 2016-colombia", "ley 1843 de 2016-colombia"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("ley 1443 de 2017-colombia") or ("ley 19437 de 2015-colombia"))) or ((("ley 143 de 2016-colombia") OR ("ley 1438 de 2016-colombia"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ley 1443 de 2017-colombia") OR ("ley 19437 de 2015-colombia"))) OR ((("ley 143 de 2016-colombia") OR ("ley 1438 de 2016-colombia")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"ley 1443 de 2017-colombia\") or (\"ley 19437 de 2015-colombia\"))) or (((\"ley 143 de 2016-colombia\") OR (\"ley 1438 de 2016-colombia\"))))".
• Removing quotes may allow a broader search: (((( ley 1443 de 2017-colombia ) or ( ley 19437 de 2015-colombia ))) or ((( ley 143 de 2016-colombia ) OR ( ley 1438 de 2016-colombia )))).
• Adding a wildcard symbol may retrieve word variants: (((("ley 1443 de 2017-colombia") or ("ley 19437 de 2015-colombia"))) or ((("ley 143 de 2016-colombia") OR ("ley 1438 de 2016-colombia"))))*.