The reason you couldn't find a dream guide shouldn't be because you don't have one. I think you just need to keep trying or wait for your dream guide to come to you. I have 4 dream guides, but I never found them by looking for them. I had to wait for them to come to me.
Another good way to draw them out may be dream incubation. You could try incubating a dream character that you would want to have as a dream guide. You would just have to incubate them with all of the dream guide characteristics. If you're interested, there's a great dream incubation tutorial here.
http://www.dreamviews.com/f45/dream-...torial-130133/