Do we know how much it costs to play? If its only a few cents (or the equivalent thereof) the returns are considerably better than if these tickets are a $1 or more...
Interestingly enough, both times the numbers were drawn in the higher tier draw (there are two tiers of draws in the bulgarian lotto - one in which you get a prize for 3, 4, 5 or 6 matched numbers, and second higher one in which only 5 or 6 matches get a prize and which usually accumulates higher jackpots). Let the conspiracy suspicions begin. :-)