WooCommerce search problem

Hi, I’m having some issues with the search bar in WooCommerce. If you search “Red Rose” in my website (https://arabicperfumes.co.uk) you’ll notice it displays many products not related to red rose.

Every product has its name and its brand as keyword. I’ve only set red and rose as keyword for this 2 products (1 and 2) and another 2 products (1 and 2) have rose as keyword. All the other products DO NOT contain any of these keywords.

Can somebody help me?

https://wordpress.org/plugins/woocommerce/