The easiest option is to choose a search theme with the ‘vertical’ word in it here: https://i.imgur.com/qp2JJMz.png
Most themes have a ‘vertical’ version of them as well.
You can also force the vertical results layout for any theme you have, via this option: https://i.imgur.com/m260b25.png
In that case however you will probably have to adjust the font colors, background colors etc.. for the results box, as it may not match with the given theme.
Best, Ernest Marcinko If you like my products, don't forget to rate them on codecanyon :)