$page = (get_query_var('page')) ? get_query_var('page') : 1;
$getposts = new WP_Query(array(
'post_type'=>'thietkekientruc',
'post_status'=>'publish',
'paged'=>$page,
'posts_per_page'=>10));
while ($getposts->have_posts()) : $getposts->the_post();

// loop custom

endwhile;
endif;
wp_reset_postdata();
wp_reset_query();

// Phân trang cho custom Query

// $page = trang số

$big = 999999999;
echo paginate_links( array(
'base' => str_replace( $big, '%#%', esc_url( get_pagenum_link( $big ) ) ),
'format' => '?paged=%#%',
'prev_text' => __('« Mới hơn'),
'next_text' => __('Tiếp theo »'),
'current' => max( 1, $page),
'total' => $getposts->max_num_pages
) );