Any site like Reddit at first seems like a content dump that is impossible to understand. In fact, it can be, but reddit subscribers itself will hardly help you with that. Finding content here is not very easy, and neither are the subreddits you're interested in. It has long been customary among seasoned users to joke about how bad a site search is, and the joke is not without truth. So, even if a search is possible, I most often use search engines for this task - more specifically, Google, which indexes the site very quickly. All other search engines, including the increasingly popular DuckDuckGo, have some difficulty finding recent entries.