When you look at the content in a mod pack, you have to scroll in it too see whats in there, and sometimes there are hundreds of mods. If your looking for something specific, you might miss it as you scroll. If you download the pack, your able to search what mods are in it, which is useful, but you might have installed it for just no reason, if what you want isn't in it. There should be a search bar in modpack's content section, when you don't have the pack downloaded.