Where are you promoting these posts right now email, social media, your homepage? And what kind of topics are they?
The thing is, most people won't click on a generic headline or plain link. You need to grab attention first. Better headlines make a real difference, something specific that creates curiosity rather than just describing the topic. Adding eye-catching images or thumbnails next to each post also helps a lot.
Another thing is, don't just rely on your blog. Share snippets of the post on wherever your audience actually spends time email lists, social media, etc. Give them a preview that makes them want to read more, not just a link and a title.