How can i see all giveaways with specific game

It was only recently re(?)-implemented, but here's a search method!

ETA: Never mind, I kinda get what you're asking now. Not sure if there's anything of the sort but the link above works as an alternate method anyhow :)

My guess is you can only do that with some user scrtipts.

Yes, maybe it was Chrome extension, atm i use Easy SteamGifts, before i used something else(but there was some problem and it didnt work anymore), cant remeber its name.

You could just wishlist the game and just show wishlisted games. It does give you all your games in your wishlist though, so if you have a big wishlist it won't really work, but if you have only like 10 games in there, it is a pretty good way.

What's wrong with the search bar?

A better way is to add the game in your wishlist. You will see all the giveaways of it available to you all the time. "D