Why won't certain products show up in search ?

[BlizzardUK]

It was made aware to me today that a product on a site I maintain is not coming up in search results. I have made sure it is visible in listings (it is) and I have made sure every product is indexed (it is). So what is likely happening ?

 

The website is : http://www.leosden.co.uk/shop

 

The product not showing up is called "THE SHADOWS - “LIFE IN THE JUNGLE” + BONUS TRACKS - CD"

 

It is visible in listings under The Shadows & Related =====> CD

 

Even if I just type in "jungle" nothing shows up.

 

Any ideas ? The search admin page says all products are indexed.

 

Thanks.