Delete Search entries in IE

As you browse the Internet, your search history is saved to a temporary Internet file by your Web browser. Any forms you fill in are also saved. Although your actual search history can always be deleted, certain search engines provide their own search suggestions, which cannot be deleted. Once you've deleted the search queries, they cannot be recovered.
This tutorial will help you to delete the search entries there by help you to protect your privacy

Delete Temporary Offline Files

When users access their files sitting on servers on the network, these files are cached on the local disk (if the Offline Files Feature is active). They remain available when the portable computer is disconnected from the network. Upon reconnection on the network, the modified files will be resynchronized with their copy on the servers .(According to the Offline  files settings available thru Tools->Synchronize->Setup in any Windows explorer window). These kind of files are called temporary offline files. They are temporary in the sense that the cached copy might be erased locally after use. Usually files that have not been accessed recently will NOT be available while offline. The “Amount of disk space to use for temporary offline files” slider (seen below), applies only to these temporary offline files, NOT to the ones you manually specify.