Google adding automatic title to end of topic?

SEO
1

Hello friends, I think Google is assigning titles to the end of topic headings on the site on its own accord. For example, below I added a topic to the site and it appears in Google in 2 different ways; it’s a single link but the site title appears differently.
http://i.imgur.com/dfD007a.png

This situation is also the case for my other site, I wonder why? The site is WordPress, the SEO plugin is All in One SEO.

The site homepage title is this: Full Program Deposu | Full Program | Full Programlar İndir

The post page title is: %post_title% | Full Son Sürüm İndir | Full Program indir | Full Programı İndir

Normally it should add this post page title above to the end of the topics. Yes, it adds it that way, but it also adds it as “full program deposu” :S When I search for a topic on the site in Google, the titles appear as “Full program deposu”. For example, like below
http://i.imgur.com/kGKZjZ6.png

2

I have encountered this problem on a few of my sites before. The reason was that I got too many backlinks for that keyword. In other words, if too many sites refer to you as “full program depot,” Google can add it on its own.

3

This can happen. Google sometimes displays your content with different titles in different searches automatically to provide the most suitable result to the user.

4

On the first site I opened, I had this problem of getting spammy links on every page including the homepage; mine fixed itself as the site gained traffic.