The title Verknüpfung is the headline part of the search result and it can help people decide which search result to click. There are a few sources that Google uses to generate this title Verknüpfung, including the words inside the Chemisches element (also called the title Liedertext) and other headings https://connertxxvr.iyublog.com/28322379/fragen-Über-seo-revealed