Short Codes in site search results

I am having a problem with Visual Composer shortcodes being returned in site search results.
Here is an example:

As you can see there are multiple shortcodes in the results like this: [vc_column width="2/3"]. How can we exclude those kinds of things from showing up in the results? It would look fine without anything between brackets [anything]
We are trying to find a suitable solution to replace Google's Custom Site Search since it will be shut down on 4/1.

Thank you,