Perhaps you should try some spelling variations:
"ley 15 de 1959" » "ley 15 de 1999" (Expand Search), "ley 15 de 1989" (Expand Search), "ley 15 de 1958" (Expand Search), "ley 35 de 1959" (Expand Search), "ley 18 de 1959" (Expand Search), "ley 13 de 1959" (Expand Search)
"Ley 11 de 1959" » "Ley 11 de 1999" (Expand Search), "Ley 11 de 1989" (Expand Search), "Ley 11 de 1958" (Expand Search), "Ley 21 de 1959" (Expand Search), "Ley 18 de 1959" (Expand Search)
"Ley 11 de 1979" » "Ley 11 de 1978" (Expand Search), "Ley 11 de 1999" (Expand Search), "Ley 21 de 1979" (Expand Search), "Ley 18 de 1979" (Expand Search)
ley 11 » ley 16 (Expand Search), ley 13 (Expand Search), ley 19 (Expand Search)

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 15 de 1959") OR ((("Ley 11 de 1959") OR ("Ley 11 de 1979"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"ley 15 de 1959\") OR (((\"Ley 11 de 1959\") OR (\"Ley 11 de 1979\"))))".
• Removing quotes may allow a broader search: (( ley 15 de 1959 ) OR ((( Ley 11 de 1959 ) OR ( Ley 11 de 1979 )))).
• Adding a wildcard symbol may retrieve word variants: (("ley 15 de 1959") OR ((("Ley 11 de 1959") OR ("Ley 11 de 1979"))))*.