There are sometimes that Google search engine works for me, but not all the time. If I can remember part of the person's username, it is very possible Google search engine will do let me the the person's profile or one of the person's posts.
Also you can try the bitlist.co to know if it will work.
using the Google search is what usually help me in finding a lot of things when making such search but failed me this time, I spent lot of time reading through the recommended topic it gave but didn't see the user I was looking for.
Ok, I will try the bitlist.
But can you remember any topic or statement which the member has made in the forum in the past? I mean a few sentences which could be used to run a search. As I can easily search out a member if I want, just by using some of the keywords from their statement I want to quote, I just use Google search and direct the search attention to the keyboard and Bitcointalk.
The topic I remember is "privacy of Bitcoin and Bitcoin wallet" The member's name sounds like oolee.