Hi,
It is the right place, but it works differently. The exact keywords you put in there, are excluded from the index, whenever found in that post content. However this does not mean partial matches. For example:
In the post text there is the keyword “anton”, and you type in “an” – it will still match, as only “an” is excluded, not “anton”.
You can prevent partial matches though, via changing the search keyword logic: https://i.imgur.com/owvfv9h.png
