Comment by ercan

I found something very annoying while looking for technical data ( a service manual for an ancient medical device - build around 2001).

The same term was the name of the device + something about the power source.

The result from the client network - my phone/client computer nothing related to the search for 4-5 pages.

Same search from work - second result was what I was looking.

So it seems there is a relation with your search history, but somehow connected with the related search history from the same ip/network.