Ad showing for non relevant keywords!

My ads are specifically made to only show up for 1 keyword i entered, however they show up for other keywords too that are combined from the main keyword!

what is that?

 

Sounds like you've got it set to broad or phrase match. You need to set your keywords to exact match. Read about match types here - http://www.google.com/intl/en_uk/adwords/learningcenter/19144.html

 

thanks. i didn't knew adwords has that, thought only the estimation tool has that!

 

You also can try to use negative keywords to reduce or eliminate low quality traffic.