You should be using the “AND” operator, not “OR”
<?php if (!is_page('about-us') && !is_page('news-articles')) {wp_head();}?>
Because you want to display the WP head only if both conditions are true.
You should be using the “AND” operator, not “OR”
<?php if (!is_page('about-us') && !is_page('news-articles')) {wp_head();}?>
Because you want to display the WP head only if both conditions are true.