Ok, i need some help.

I have two columns of data. For one of the columns, i need to find out if
its contained somewhere, anywhere in the other column. So how was going to
do it was useing an ISNA, Match function and create a new column called
Missing?, and then drag the code down, if its not contained then it will
output True, if it is there, then it will output False. This usually works
great. The only problem im having is that my column contents are kinda
wacky. Here are some examples

M4758375
12-67-8
056-76-23
08-22-456

So both columns have data like this. And for some reason, my ISNA code isnt
working.

Any ideas?

Thanks,

-Adam