[Plugin: Efficient Related Posts] It's basically just considering tag

I’ve install this plugin, and have seen the result on my site.

I have only 6 tags, and in every time it display single post, the related posts are almost the same.

Basically it takes only the first 5 (as defined by me) posts with the same tag, and it never consider page which contain the same words with the tag in title.

You can visit sample of the related posts result in:
https://www.censin.com/coal-and-manganese-miners-world/