How to combine four text fields into one column in a view?
TL;DR: Add the four fields, hide them from the view. Add a custom text field, use it to custom-render the earlier four.

What you need to do is add the four fields into your view. For each, click and check the Exclude From View setting. Then add a fifth field, a Custom Text field, and arrange it so that it comes after the four fields earlier. Click on it to edit, and configure it to output the fields earlier using token replacements.