Google adwords

Hey guys, I created adwords campain for 4 keywords but i got a lot of click from another keywords that won't related to my keywords. I spend 20 bucks in one hour for 3 good clicks, and 50 clicks I don't need. Any idea what I did wrong?

Thanks!

You targeted your keywords in "broad match", so you ads appears for every related keywords (at least "related" from google's point of view)

You should use "exact match" in your campaign if you want to target only these specific keywords.

Thanks mate!