Perhaps you should try some spelling variations:
decreto 1335 » decreto 135 (Expand Search), decreto 1366 (Expand Search), decreto 1382 (Expand Search)
"Decreto 1335 de 1999 - Colombia" » "Decreto 135 de 1999 - Colombia" (Expand Search), "Decreto 1333 de 1999 - Colombia" (Expand Search), "Decreto 1325 de 1999 - Colombia" (Expand Search), "Decreto 1335 de 1995 - Colombia" (Expand Search)
"Decreto 1335 de 1991 - Colombia" » "Decreto 135 de 1991 - Colombia" (Expand Search), "Decreto 1333 de 1991 - Colombia" (Expand Search), "Decreto 1325 de 1991 - Colombia" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("Decreto 1335 de 1999 - Colombia") OR ("Decreto 1335 de 1991 - Colombia"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Decreto 1335 de 1999 - Colombia\") OR (\"Decreto 1335 de 1991 - Colombia\"))".
• Removing quotes may allow a broader search: (( Decreto 1335 de 1999 - Colombia ) OR ( Decreto 1335 de 1991 - Colombia )).
• Adding a wildcard symbol may retrieve word variants: (("Decreto 1335 de 1999 - Colombia") OR ("Decreto 1335 de 1991 - Colombia"))*.