Ok I got the file location and followed the steps provided in the link you provided. Its working now but I have a small question. After this line:
“$results = new WP_Query(apply_filters(‘woodmart_ajax_search_args’, $query_args));”
I have added this code:
“relevanssi_do_query( $results );”
The question is, will this completely override all the search results with the ones from relavanssi plugin?