siddhänäm—of those who have achieved perfection Bg 7.3
siddhänäm—of all those who are perfected Bg 10.26
siddhänäm—of all the residents of Siddhaloka SB 4.10.14
siddhänäm—who are perfect (because they understand the insignificance of bodily comforts) SB 6.14.5
siddhänäm—and the inhabitants of Siddhaloka, who are expert in yogic power SB 6.17.26
siddhänäm—of the great mystics SB 9.4.25
Can't find any compound Sanskrit words containing siddhanam.