Search in the particular site

In addition to searching for a particular text using the default search engine (for example, if the text highlighted is viatical settlements, right-clicking on this highlighted text will have an option called Search duckduckgo for "viatical settlements" in the context menu (if the default search engine is DDG)). But, since I am in the site Investopedia, I want a context menu saying Search duckduckgo for "viatical settlements" in this site (or its equivalent which may explicitly mention the site name or site URL) which will translate to viatical settlements. Because I mostly search for something on a specific site (similar to Dorking). So, it’d be helpful if this is added.