I have had a person helping me with issues on my work pc. 

  This person has stolen my car and I have been told during his time as a 'user' on my account he may have visited sites relating to my finding my car.

  I deleted him as a User about 3 weeks ago. Can I still find the sites that he logged into when he was a user? Other than myself, he's been the only ther user on my account.