While optional, Search Enhancements improve upon your search. Search Enhancements can be useful for targeting your search to a particular type of subject matter, amongst other things. For example, if your search is about art, you might want to search using the "Art" enhancement. There are many search enhancements to choose from. Click the Search Enhancements drop-down to find just the right enhancement for your search. To search without additional enhancements, select none or nothing at all.
What are Top Facts?
Top Facts are usually found in databases rather than on the web. Searching facts can often help you find better search results on the web. You can quickly enter information into your web search by clicking the buttons at the bottom of each fact. Searching the words in these buttons can be very useful for constructing a search that will find the information you are looking for.