Don't give up!
Using the product search feature in the Review portion of your dashboard, is the best way to go about things. I usually start on the very last page and see if there's anything I'm interested in and go from there.
If you're requesting lingerie, only one admin assigned review is allowed on that item. The review may be pending in the system so, it won't show on the site. If you're requesting toys, three admin assigned reviews are allowed, and those reviews may be pending and unpublished.