Internet Anagram Server can help you find rearrangements for the letters in your name.

I have a few interesting anagrams of my first and last name:
Dr. Mira S. Arachnid
Sir, I'm a handcar Dr.
Dr. Sin, A Rich Drama
Damn, Sir. A Richard.
It found a total of 32,382 anagrams, so I didn't go thru them all.

For just Miranda, I got 138, including:
I'm A. Rand. (Yes, I wrote Atlas Shrugged)
Mad rain.
I ran mad.
Damn air.
In drama.

For MandyDax, just one:
Dandy Max, or Max Dandy.