I have regice but I can't find the other two dolls.whare can I find the other two dolls?!

You need to scan the QR codes of the 3 Developers, Masuda, Tsuguru and Morimoto.

So, to get the 3 regi dolls (well 2 since you already have 1) you need to download the 3 qr codes from the makers of Pokemon oras. There have been lots of issues about this because people think it's tough to get. So, try your best to get it here: https://thecakeisnotalietome.wordpress.com/2014/12/07/regice-registeel-regirock-dolls-for-your-secret-base/

Once downloaded, go to mossdeep city and you would find a guy saying that he's still waiting.

Not 100% this might work. But, try it anyways.

Hope this helped!

There found in secret bases of the game developers. Each one gives a different doll.

http://i.imgur.com/Lg2Vpxb.jpg. <----there qr codes