So, with the quest vault i expect there to be some people that have made their own campaigns around. Is there any database or any easy way to search for home made campaigns? The way the vault is made i havent faund an easy way to search for this.

Thanks in advance

There's no separate database of campaigns that I'm aware of. I know it has been an often requested feature for the quest vault, to be able to mark quests as part of a campaign and sort/search accordingly, but that feature does not seem to have materialized.

The only homebrew campaign I'm aware of is Silken Threads, which can probably be found more easily on BGG. I'm not entirely sure that he even used the quest vault to build it - I'm pretty sure he started work before the quest vault existed.