Perhaps you should try some spelling variations:
"ley 1438 de 2016" » "ley 1448 de 2016", "ley 1480 de 2016", "ley 142 de 2016"
"ley 1437 de 2012" » "ley 1480 de 2012", "ley 1448 de 2012"
"ley 1335 de 2012" » "ley 1333 de 2012", "ley 1355 de 2012", "ley 115 de 2012", "ley 1330 de 2012"
"ley 1978 de 2012" » "ley 1448 de 2012", "ley 1955 de 2012", "ley 1278 de 2012"
"ley 1098 de 2015" » "ley 100 de 2015"

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 1438 de 2016") or ("ley 1437 de 2012"))) or ("ley 1335 de 2012"))) or ("ley 1978 de 2012"))) or ("ley 1098 de 2015"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((((("ley 1438 de 2016") OR ("ley 1437 de 2012"))) OR ("ley 1335 de 2012"))) OR ("ley 1978 de 2012"))) OR ("ley 1098 de 2015")).
• Removing quotes may allow a broader search: (((((((( ley 1438 de 2016 ) or ( ley 1437 de 2012 ))) or ( ley 1335 de 2012 ))) or ( ley 1978 de 2012 ))) or ( ley 1098 de 2015 )).
• Adding a wildcard symbol may retrieve word variants: (((((((("ley 1438 de 2016") or ("ley 1437 de 2012"))) or ("ley 1335 de 2012"))) or ("ley 1978 de 2012"))) or ("ley 1098 de 2015"))*.