Have you seen a search box containing text Google Custom Search?
This search box is called the Google Custom Search box.
When someone searches for your site in custom search, the result will come along with some ads. This is AdSense ads. It means you are allowing the searching functionality for your blog, also showing the Adsense Ads, which will increase the CTR of Ads. Ultimately, your Adsense earnings will increase.
Now, let’s learn to add the Google Custom Search for your blog.
Open Google Adsense and Sign in.
Click on my ads tab, from the left sidebar you will see Search, click on that.
Click on New Custom Search Engine
Fill in the appropriate information, save and get the code.
You need to put that code where you want a custom search box, WordPress if you are using blogger then add widget HTML/JavaScript and place code in it. If you are on WordPress, then it depends on the theme or uses a text widget to add a custom search box.