I would be highly appriciate if you share some tips from those strong SEO Strategy

I have two different website, one is the mother site - "www.abc.co.uk/sell-your-rolex" and another one is the child site - "www.sellmyrolex.co.uk". Is it possible for me to get keywords ranking for both of the website for the term - "sell rolex watches" "sell my rolex" "sell a rolex" etc.