Search titles AND taxonomies

Hello,

I’m using the advanced search + keyword search feature available in the Responsive Directory Press theme.

What I have now: The keyword search only compares the input keyword with the listing title
What I would like to have: The keyword compares the keyword with both the title and the taxonomy

I managed to fix this by installing the “search everything” plugin. However, it breaks the radius-search feature.

After disabling the plugin, I went to “framework/class/class-search.php” but found out that there were only cases for the custom and taxonomies searches. Does this mean that the default wordpress search engine is being used for the keyword search?

A solution, anyone? Either by enabling the search everything plugin without breaking the other advanced search features? Or simply by adding the taxonomy in the keyword search?