Google not using website title as entry

Hi,

1rst I’d like to thank you, WordPress is amazing!

Now my little issue :

I managed to make my website visible on google but when I search for the title “Mahjong Club Lausanne”, the result title shows as my sub page “– Tout savoir sur le Club” instead of my site title. It’s good to see it’s there, but I wonder if there is a way to fix the wrong indexation of my site, I’d love the entry to show “Mahjong Club Lausanne”, simply.

ling to my website (it’s in french but content is irrelevent :P) : Link