Okay, I think I understand. When searching for “ferrari rojo”, there are more than 3 results. The reason is, they are matching keywords from the contents. For example, in post id=255, “Ferrari 488 GTB”, there is the keyword “rojo” and “ferrari” in the content, as well as “ferrari” in the title: https://i.imgur.com/bKq7MeT.png
It matches because all keywords are present at least once.