There is a search engine at the top of the screen. When you get into it, it will ask you for perameters. Name of poem and the authors name, date of submition etc. If you are not looking for a specific poem or author then it is hit and miss. It will search out key words used in the poem but if you use "love" for example, you will find thousands of posts.
I am not sure of what specifically you are looking for but I hope this helped.