linked products and change tittles

Hello,

I would like to change the size of the linked products, its too big right now, look the sample here, are down the tittle “You may also like”:
http://www.bunkerboardshops.com/V2/product/bunker-1/
Are down the tittle “You may also like”

I try in the settings of the woo commerce and in the settings of the theme, but I can’t fount it…

Also, where can I change the tittles, for example “You may also like”

Please, can you help me?

Thanks

Alfonso