Search File Extension
Search is related to Windows search files. These files are used for saving search results.
Search stands for search files. These are the search results which saved after searching by Windows operating system. Especially, Windows 7 operating system saves the search results for using them again later. Generally, this file is found in desktop. You can hide or delete this file.
There is no harm to delete search results.
What needed to Open Search file extensions.
Links about Search file extension
No connection related to Search extension.