[ASK] Different Title Tag - Same URL - Wordpress - Multiple G Listings? [ASK]

OK, so this website which is a wordpress site is using a neat trick with its title tags. If you look at the pic you can see that they are showing up for multiple searches for the same URL however the title tag is different (hence the multiple listings) anyone know how this is done? is there a plugin I don't know about maybe??

Cheers,

TAC