Windows8 Change Search Settings to Clear Search History Disable Web Search, etc.

How to Change Search Settings
1. Swipe in from the right edge of the screen, click “Set”, then click “Change PC Settings ”. Or search for “set” or “power ” and other keywords to select the corresponding search results.
(If you are using a mouse, point to the lower right corner of the screen, then move the mouse pointer up, click “Set”, then click “Change PC Settings 
2.Click or Click "Search & Apply", and then tap or click "Search”.
3. Change the required settings.
By changing your search settings, you can clear your search history, choose how to share your search information with Bing, and more. You can also turn off web search and see only results from your computer and OneDrive. If you use mobile data to access the Internet, you may wish to do so.