Perhaps you should try some spelling variations:
"Ley 12 de 1994 - Colombia - Comentarios" » "Ley 12 de 1991 - Colombia - Comentarios" (Expand Search), "Ley 12 de 1995 - Colombia - Comentarios" (Expand Search), "Ley 12 de 1999 - Colombia - Comentarios" (Expand Search), "Ley 11 de 1994 - Colombia - Comentarios" (Expand Search), "Ley 18 de 1994 - Colombia - Comentarios" (Expand Search), "Ley 13 de 1994 - Colombia - Comentarios" (Expand Search)
"Ley 22 de 1994 - Colombia - Comentarios" » "Ley 22 de 1991 - Colombia - Comentarios" (Expand Search), "Ley 22 de 1995 - Colombia - Comentarios" (Expand Search), "Ley 22 de 1999 - Colombia - Comentarios" (Expand Search), "Ley 28 de 1994 - Colombia - Comentarios" (Expand Search), "Ley 23 de 1994 - Colombia - Comentarios" (Expand Search), "Ley 27 de 1994 - Colombia - Comentarios" (Expand Search)
ley 12 » ley 15 (Expand Search), ley 16 (Expand Search), ley 13 (Expand Search)
ley 22 » ley 27 (Expand Search), ley 29 (Expand Search), ley 20 (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("Ley 12 de 1994 - Colombia - Comentarios") OR ("Ley 22 de 1994 - Colombia - Comentarios"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Ley 12 de 1994 - Colombia - Comentarios\") OR (\"Ley 22 de 1994 - Colombia - Comentarios\"))".
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• Adding a wildcard symbol may retrieve word variants: (("Ley 12 de 1994 - Colombia - Comentarios") OR ("Ley 22 de 1994 - Colombia - Comentarios"))*.