The short answer is - It's not directly supported in Tableau, but there are some hacks... we also now have REG_EX expressions which could be helpful... although I have never tried.
Mark Jackson has done more on fuzzy matching than anyone (I could find)
Hope something there helps!
Thanks Mark - appreciate that 'fuzzy matching' can mean slightly different things... and thank you for the additional link and information.
Ketan... I hope something here is/has been helpful!