If you can read German, there is this: http://www.palikanon.com/samyutta/sam12_60.html. I am sorry if this if of no use to you.
Here you go: http://www.metta.lk/tipitaka/2Sutta-...avaggo-e.html. Hope that helps.
Samyutta Nikaya, Nidanavagga, 12. Nidanasamyutta VI. Suffering (or The Tree) 51 (1) Thorough Investigation Thus have I heard. On one occasion the Blessed One... said this: "Bhikkhus, when a bhikkhu is making a thorough investigation, in what way should he thoroughly investigate for the utterly complete destruction of suffering?"...