Perhaps you should try some spelling variations:
"ley 1330 de 2015" » "ley 1340 de 2015", "ley 1333 de 2015", "ley 1335 de 2015"
"ley 1563 de 2012" » "ley 1564 de 2012", "ley 1562 de 2012", "ley 1581 de 2012"
"ley 1503 de 2016" » "ley 1523 de 2016", "ley 100 de 2016", "ley 1581 de 2016", "ley 1500 de 2016", "ley 103 de 2016", "ley 1403 de 2016"
"ley 1508 de 2016" » "ley 100 de 2016", "ley 1098 de 2016", "ley 1581 de 2016", "ley 1500 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 1330 de 2015") or ("ley 1563 de 2012"))) or ((("ley 1503 de 2016") OR ("ley 1508 de 2016"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ley 1330 de 2015") OR ("ley 1563 de 2012"))) OR ((("ley 1503 de 2016") OR ("ley 1508 de 2016")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"ley 1330 de 2015\") or (\"ley 1563 de 2012\"))) or (((\"ley 1503 de 2016\") OR (\"ley 1508 de 2016\"))))".
• Removing quotes may allow a broader search: (((( ley 1330 de 2015 ) or ( ley 1563 de 2012 ))) or ((( ley 1503 de 2016 ) OR ( ley 1508 de 2016 )))).
• Adding a wildcard symbol may retrieve word variants: (((("ley 1330 de 2015") or ("ley 1563 de 2012"))) or ((("ley 1503 de 2016") OR ("ley 1508 de 2016"))))*.