a bookmarklet to copy a url to the current page, with the current selection highlighted. (Chrome only. Because other browser care about timing attacks more than your Google search result experience.)

copy_url_to_selection_bookmarklet.js

javascript:
let tempInput = document.createElement("input");
tempInput.value = window.location.href + `#:~:text=${window.getSelection().toString()}`;
document.body.appendChild(tempInput);
tempInput.select();
document.execCommand("copy");
document.body.removeChild(tempInput);