It's actually Moringa oleifera (e before i). You might have better luck searching for it with that spelling.

J. L. Hudson Seedman (excellent Garden Watchdog rating) currently offers these seeds for sale.

Hendry Creek Hideaway and Moringa Source (warning, no clue about the reputability of these companies) also offer these seeds for sale.

Arid Lands Greenhouses (excellent Garden Watchdog rating) currently has the plants (not seeds) for sale.