Hello Ekrem320,
If we're understanding you right you would like to remove some previously viewed Safari content from the suggestions you receive when you do a search.
We recommend going to Settings > Safari > Clear History and Website Data. After that go to Settings > Safari > Advanced > Website Data. If there is still some website data that appears there you can swipe left on specific website data to delete it, or you can select Remove All Website Data.
To prevent Safari suggestions from appearing when you search adjust your search settings for Safari using these steps:
You can change the search settings to limit which apps and results appear while you're searching. Here's how:
- Go to Settings and tap Siri & Search.
- Scroll down and select an app.
- Then select Show App in Search, Show Content in Search, Show on Home Screen, Suggest App, or Suggest Notifications.
To turn off Siri Suggestions for all apps, go to Settings > Siri & Search, and turn off the settings you want."
Use Search on your iPhone, iPad, or iPod touch
Thanks for using Apple Support Communities.
Take care.