Instead of using an empty column just to occupy space and push the next column further to the right, you can just use Bootstrap's .col-*-offset-* classes.
Wrong:
<div class="col-xs-3"><!--spacer--></div> <div class="col-xs-9">...</div>
Right:
<div class="col-xs-offset-3 col-xs-9">...</div>
To achieve horizontal alignment there you have additional classes at your disposal in Bootstrap 4 and newer. Also there are classes (margin utilities) which help you with moving sibling columns away from one another.
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