wishlist_archive_query_args

You can show a specific wishlist on the “Wishlist Archive” page using this code.

Here, change the keyword to show the particular wishlist.

add_filter('wishlist_archive_query_args', 'wishlist_archive_query_args_20201908', 5);

function wishlist_archive_query_args_20201908($query_args){


    $query_args['s'] = 'Keyword here';

    return $query_args;
}

Visit this page for a better understanding of the code with WP Classes.