Linking related articles together helps a lot, as does choosing descriptive titles. Some people also promote their articles through facebook and twitter, but you have to becareful not to spam social media sites with your links.
Keep in mind there are many aspects of the site that you don't have control over, so there's only so much you can do on your own to get more views. If you have a large number of related articles, you might consider building your own website. Many have done this in the past several months since Hubpages has been on the decline for a while. You own the rights to your content, so you are free to move your articles off of Hubpages any time you wish.