I was just wondering if writing several articles with the same keyword(s) in the title is liked or disliked by Google?
That's not a problem, if we need to target a specified key word then we need to write many unique articles with a good combination of key words. I guess title must optimized in proper way.
Google just likes unique content. They won't penalize you if you have other content related to that post. In fact it is the opposite. They will reward you instead. That creates a good chance to cross link those posts and create good relevant internal links. Also if you get one of those pages ranked well, you could get an indented double listing for the 2nd page. This would increase your chances of getting a click-thru.
You may write different articles as long as you can have fresh ideas flowing for all the articles you write. If you write the same article logic but re written using different words, google may love you but your readers will get fed up reading crap
Well, I can't see any problem here at all - if you have a blog dedicated to a specific topic, it's natural for you to write posts pertaining to the topic - who cares if they are about a thing that has been mentioned somewhere previously. Just don't copy-paste (in terms of both wording and meaning) and you'll be fine.