nirgunasya—of the Absolute SB 1.10.19
nirgunasya—of the transcendence SB 2.5.18
nirgunasya—without the modes of nature SB 3.7.2
nirgunasya—unadulterated SB 3.29.11, SB 3.29.12, SB 3.29.11-12
Can't find any compound Sanskrit words containing nirgunasya.