Rogue text in search (route=product/search&search=flipping%2)

Hi, I hope someone can help as I'm lost here.

I have OC 3.0.3.2 running and I've had a google notification to say that I have page indexing issues. When I look at the page, it shows a long list of text like this.

Search - flipping homes with other people's money,【Visit Sig8.com】flip heroes earn money,money flip on cash app,flip cash investment website,flip $100 to $1000,best way to flip houses with no money,fundyourflip,flipping a home with no mo


I have no idea how to remove this and protect against it again. This is part of the url for my site - where the text appears apparently.
****gifts.co.uk/?route=product/search&search

Hire a developer, one who can scan your site for viruses.

You can provide URL to check.