Perhaps you should try some spelling variations:
ley 1523 » ley 1503, ley 1581, ley 142
ley 1437 » ley 1480, ley 1448
ley 1563 » ley 1564, ley 1562, ley 1581
ley 1943 » ley 1341, ley 1448, ley 142
ley 143 » ley 1438, ley 1413, ley 142
ley 103 » ley 1503, ley 1083, ley 100
de 2010 » de 2012, de 2011, de 2017

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((ley 103) or (((ley 1523) or (ley 1563)))) ((de 2010) or (de 2015))-colombia ) or ( ((ley 143) or (((ley 1943) OR (ley 1437)))) de 2016-colombia ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((ley 103) OR (((ley 1523) OR (ley 1563)))) ((de 2010) OR (de 2015))-colombia ) OR ( ((ley 143) OR (((ley 1943) OR (ley 1437)))) de 2016-colombia )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((ley 103) or (((ley 1523) or (ley 1563)))) ((de 2010) or (de 2015))-colombia ) or ( ((ley 143) or (((ley 1943) OR (ley 1437)))) de 2016-colombia ))".
• Adding a wildcard symbol may retrieve word variants: (( ((ley 103) or (((ley 1523) or (ley 1563)))) ((de 2010) or (de 2015))-colombia ) or ( ((ley 143) or (((ley 1943) OR (ley 1437)))) de 2016-colombia ))*.