Try the search again on the regular IMDb site. If you don't see the film listed on the search results page, look at the right-hand side of the screen. You should see "Category Search" with various options below it and then "Additional Search Options".
At the bottom of the Additional Search Options, you should see a link that says "Enable adult titles/names in your searches." Click on the word "Enable" and you will find the film you are looking for near the top of the new list.