post by taxonomy not showing at all in wordpress - php

Question

Newbie here,
I'm trying to display the list of my post depends on the category. But it doesn't display my post. I tried the different type of array, but no luck. I named my page taxonomy-blog_category.php
I call the page via site.com/blog_category/category
here's my current code and I know I'm so close but can't figure it out.
Here is the array:
<div class="row">
<?php $ctr = 1;
$paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
$custom_args = array(
'post_type' => 'blog_post',
'orderby' => 'date',
'order' => 'DESC',
'post_status' => 'publish',
'posts_per_page' => 6,
'paged' => $paged,
'tax_query' => array(
array(
'taxonomy' => 'blog-category',
'field' => 'slug',
'terms' => array('business','people','technology'),
),
),
);
Here is how I display the post
$custom_query = new WP_Query( $custom_args ); ?>
<?php if ( $custom_query->have_posts() ) : ?>
<?php while ( $custom_query->have_posts() ) : $custom_query->the_post(); ?>
<div class="col-md-4 text-center">
<div class="content-container">
<div class="wrap">
<figure class="tint t2">
<img src="<?php echo wp_get_attachment_url( get_post_thumbnail_id() ); ?>" width="317px" height="240">
</figure>
</div>
<h2><?php the_title(); ?></h2>
<h3>By <?php the_field('author'); ?> | <span><?php echo get_the_date(); ?></span></h3>
<?php $content = get_field('content'); echo mb_strimwidth($content, 0, 200, '...');?>
<div class="read-more-btn">
read more
</div>
</div>
</div>
<?php $ctr++; endwhile; ?>
I Don't know if this is necessary but here's my code for pagination:
<div class="pagination-holder">
<ul class="pagination">
<?php
if (function_exists(custom_pagination)) {
custom_pagination($custom_query->max_num_pages,"",$paged);
}
?>
<?php wp_reset_postdata(); ?>
<?php else: ?>
<p><?php _e( 'Sorry, no posts matched your criteria.' ); ?></p>
<?php endif; ?>
</ul>
</div>