Hi,
I could not find any course titles starting with ‘marketing’. It is only contained within the post title, but no course title is starting with ‘marketing’.
On the General Options -> Logics & Behavior panel, you have set to only match items that start with the phrase: https://i.imgur.com/yMxs4NF.png
You should try the ‘Anywhere’ options instead, it will match the ‘marketing’ keyword anywhere in the title.
They are not actually repeating, those are terms from different taxonomies, linking to different taxonomy arhives. The best possible solution is to choose only one taxonomy to return as results, whicever you prefer.