Expected:
A search box on the landing page of a site, will search the site

Actual:
The search bar does not search the site contents, it searches... article titles or something.

Example:
If you search developer.matomo.org fortrackPageView, it tells you there are no results.

But if you search at an engine, it shows there are many results:

A workaround could be to put a statement next to the search box saying "this does not search the site" and we could give instructions for how to do an Advanced Search at a search engine.