search for word like universe as well. Also, if you are a dummy who can't properly use a search engine like most people who use a computer, it can help if you type the subject of your search on a search engine, followed by site:URL where URL is the site you want to search through. This is especially useful with the aforementioned website, whose search bar doesn't really work well. Blame prophpbb.
Now, for what concerns search engines, stay the fuck away from google, yahoo, bing and other mainstream ones. These engines track everything you do within them and register it. Use either https://duckduckgo.com/ or https://www.startpage.com/ The latter also has a built-in function that allows to use google's database ANONYMOUSLY.