Where does “bulunmaq” come from?

bulunmaq (Azerbaijani) comes from Azerbaijani bulmaq, from Proto-Turkic bul- — to find.

Ancestry of “bulunmaq”, step by step

Step	Language	Word	Meaning
1	Azerbaijani	bulmaq	to find, to attain
2	Proto-Turkic	bul-	to find