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Hi, community. I have a problem with the ranking of my blog and I hope anyone could help me to solve this problem. I have been trying to rank my blog post for a keyword for almost 6 months but still getting no success. My URL is: this blog post
Target keyword: best laptops for college The interesting fact is that the post has been on page #2 of BING but nowhere on google. It was on page #3 of google for about one month, but it's been 1-2 weeks gone(not ranked anymore but it's still well indexed). The post has been replaced by another post of my blog(let's say post A) which doesn't have any link. The Post A is ranking on page #4 right now.
The weird thing is my post which ranks for this keyword frequently changes. One day the Post A was on page#4 then after a few days it changed to the post B. Yesterday I searched on google for a keyword "number one on bing but nowhere on google" and then I
come across to read this article on MOZ community and one of the people here said that it was over optimization issue. I think my post has been suffering for an over optimization penalty algorithm. Just for your information, I have been building backlinks to this URL for the last  5 months(it's 1+ year old). It has backlinks only about 1,5k from 200 domains(according to ahref). I have used the exact match anchor only under +/-  2%. The rest is branded, naked URL and generic anchors.
So, in this case, I thought that I haven't done any over anchor optimization.
I have checked the keyword density and I found it was "safe". One important thing I can remember before the post has gone is I add a backlink from lifehack.org(guest post) with exact match anchor.
I suspect this is really the cause because 2-3 days after doing that then the post is gone(dropped) and replaced by another post of my blog(as I've mentioned before). But it's very strange because the amount of the anchor keyword(including the long tail) is only about 10(from 200 domains) or only  5% which mean it should be safe. I'm so Sorry. It's a long story 🙂  So, What is actually happening to my post? and How to fix this problem... Please..please help me... Any hep is appreciated. By the way, Sorry for my poor english.. 🙂