How to customize Search Results

Hi – I am creating a website for a school. I added Groovy Hamburger Menu to my website to make everything look more sleek and clean as to having all the tabs on the homepage. With that being said, the Groovy Hamburger Menu Plugin comes with a search button and I love it… however, whenever I search for information about the site, the search results look more like blog posts and aren’t helpful. I don’t know how to switch it or code it correctly.

Link for reference of what’s showing

site help

What I’m looking for the page to do, is come up more as a google search with just title of the page instead of everything extra like you see in the screenshot.

Any advice is helpful. I tried contacting the plugin creators but doesn’t seem like they’ve been active since last year :/
Thanks in advance.

The page I need help with: [log in to see the link]