How to insert google ads?

Hello, in the osclass admin, there is only few places to add google adsense codes, how to do if you want to add more ads in website such between listings, inside posts, or sidebars?Thank you

You can edit the theme files and just paste the ad code directly. thank you for reply, you mean in php files directly? and if so, what about ads between listings in search list and home page, example after 5 listings i show google ad. How i can do that?