cannabjs on "[Help ]Query with wp_pagenavi?"

i use

query_posts(array(
							'post_type' 		=> 'san-pham',
							'posts_per_page'	=> 8,
							'paged'				=> $paged,
							'order'				=> 'DESC',
							'tax_query' => array(
										array(
											'taxonomy' => 'nhom-hang',
											'field' => 'slug',
											'terms' => get_queried_object()->slug
										)
									)
							)
						);

pagenavi ok. But it does get post_per_page = 8 it only show 5 posts