You searched for 'russian' so Google thinks you might be interested in things Russian & has tried to serve up an advert for things Russian. Looks like they had to scrap the barrel pretty hard to come up with anything!
Do a few searches for flowers, roses, daffodils & lavender & the ads you get will smell much sweeter.
I found out what it is. I have Acestream player installed and it uses UPNP to install adware in your browser. This inserts ads from aceadsys.net. The solution is to create new filters in adblock+ or uninstall Acestream.
Its not adsense, nor do I think it's anything Fun's server has delivered to you. Rather it looks like you have malware on your system. Running Malwarebytes should be your first action. See what it picks up