Took me a few tries to find "Hungarian Folk or Byzantine Major Gypsy" scale as I first tried the other aliases:
1. Double Harmonic (main English language theoretical name) [1]
2. Byzantine (finds it, but in my experience is known as "Byzatine scale" and "Major Gypsy" is another scale name -- it is weird to see them glued together.
3. Mayamalavagowla
4. Bhairav Raga
5. Arabic (Hijaz Kar)
It would be nice if a given scale had all its known names attached to it.