Did you try "Advanced Search"? The search function has one problem which we haven't been able to fix, and it's that it refuses to search for words that are used "too much"- so you and are may be ignored. This annoys me to no end. Our technical admin tried to remove it, but it didn't change.
You can also try going to Tutor's profile, and it should have a 'latest posts' feature, and if he didn't delete it, it should still be there.
Good luck.