It's already in the database here:
Tall Bearded Iris (Iris 'My Oh My')
One of the quirks of the search engine here is that it ignores words that are less than three letters long (this allows search results to be generated much faster, which is important in a database this large).
But, there are few plants, Like 'My Oh My' that don't have any three letter or longer words in their name. 'Az Ap' is another.
The best way to find those is to go to the Iris Database page and click "Browse the full list of irises". All 65,000+ irises will be listed alphabetically there, kind of like flipping through an encyclopedia. It's not the most efficient way to find something but, on the other hand, there are very few irises that have names like that.