Detailed search form

Hi everyone!

I have just set up my first website. But now I am stuck with something. I need a way to set up a detailed search form.

Heres a link to a site that has the function that I want to be able to use:

https://www.boattrader.com/

It searches through what I assume is a database, then pulls up a bunch of articles that fit the requested search values.

I am using the “Enigma” theme, if that helps.

So my questions are: How do you set this up? What search form/widget do I make use of? And how do I set the articles up that the search action returns?

I would be the only one adding the articles. People are not going to register new boats in this instance.

Thanks