White was to slow and didn't let his pawn storm rumble a bit before he exchanged the bishops off.
The Yugoslavians tried to attack the Dragon, but they were just devoured.
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To begin with, white played awfully in terms of tactics to over come the sicilian dragon, white should of never castled long to begin with 
when you can clearly see black has attack majority on queen side, the game was resignable from there 
. So lesson to be learned here is to never castle into trouble.
Instead of g5, h5 #15 was the correct move to fully utilize that queen 
The game would of been very different if it were not for the weak castling move and very weak g5.
But we all learn from mistakes!
gg
7.Qd2 Ng4 8.Bb5+ forces 8...Kf8, but this is not a major annoyance. The game is about equal, but I think Black's position is somewhat easier to play.
What white played in this game certainly isn't a Yugoslav attack- it's much closer to a Russian salad.