Rae from Shopify here.
Which theme are you using on your site at the moment? You can find this information directly in your Shopify admin under 'Online store > Themes > Current theme'.
Depending on the theme you're using, you may be able to remove this phrasing by following these steps:
However, if this phrase doesn't appear in the search results, then this text may be located elsewhere on your theme. If this is the case, let me know if you're using a Shopify-developed theme and I can help take a closer look. If you're using a third party theme instead though, it's best to reach out to your theme developer directly for more assistance. You can contact them by following these steps.
Please keep me posted on if you're able to find this phrase by following the above steps, and if not, let me know which theme you're using so we can determine the best way to resolve this.