Well I've typed the word "music" into the box, hit the "Find words" button then the page refreshes and I get a list of words which start thus:
musical
play
swing
jazz
score
so I scrolled to the bottom of the page
and in the little box I deleted the asterisk and entered 18 question marks.
Then I hit the "go" button, the page refreshed and in the box at the top I got
??????????????????:music
and a whole pile more words like this
1. musical arrangement
2. gilbert and sullivan
3. hemidemisemiquaver
4. musical performance
5. alexander balanescu
6. alexander zemlinsky
If I had a rope, I'd hang myself!!!