To find a particular word written in a string type field in AX 2012?

Is it possible in AX 2012 to find a particular word/words written in a string type field in AX 2012 table or form. e.g, I have a field named Memo in my table named test. In that field I have a written a text as:

Hello, We need to confirm you that your < mobileNumber > is successfully attached with your account no. < Account >.

Now, I need to find all texts written inside tags “<” and “>”. Furthermore I require to replace these texts according to my need. Please tell if its possible in AX 2012 or if there is any other option that I can opt to fulfill my need.