Hi! Dev here. I’m glad that you are liking the plugin.
To clarify, the shortcode follows Indeed API rules strictly. So if you want some job searches relate to specific field, you would want to do something like this.
[indeed q="Sales -technical -development -engineer" limit="6" co="us" l="ca" sort="date" jt="fulltime"]
-engineer
excludes post containing the term.
Hope this can help.
Masa