Keyword suggestion not working | WordPress.org

I want something like this. I read that free version provide this functionality and I configure it from here:

Go to your WordPress dashboard.

Navigate to Ajax Search Lite > Ajax Search Lite settings from the sidebar.

• Click on the General Options tab.
• Scroll down to the section labeled Autocomplete & Keyword Suggestions.

  https://nimb.ws/JSGd8pU

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