A teacher once told me that his name in Aramaic was Yosha (Yasha?), and I called him this for a while, even naming him that in early versions of my two Jesus novels. But when I researched I found no reference to this word except that "Yasha" means "Salvation" and is part of what composes "Yehoshua." So they could have called him that as a nickname, I suppose.
I don't use it these days, partly because I found out that it means demon or something in Japanese, and a lot of kids these days are familiar with that term from the anime series, "Inu Yasha." But, interestingly, also a Christian kid's show gave the name Yasha to a boy that helped kids from our world find the baby Jesus. It was either "Flying House" or "Superbook."
I think it's fun that the name Yeshua sounds like "Yes, you are."
When I sing the song, "Isn't he wonderful?" one verse says, "Yes you are wonderful, wonderful, yes, you are," and I can sing, "Yeshua, Wonderful," etc.
At one time I would call Jesus Mr. Wonderful, and he would say, with a trinkle in his eye, "Why do you call me wonderful? Only God is wonderful!"
I found out later that the word used for "good" in the place where Jesus said, "Only God is good" also means "wonderful."