The case-insensitive search covers the entire site, returning a list of documents in which the search term is found.
Click the link to go directly to the page, where you can search with the browser find box (F3 or Ctrl+f).
It has been set to accept whole words or partial phrases.

Further information may be accessed from the link ′search tips′ on this and any results page. The user may perform an ′advanced search′, the options are described in the search tips.

Unfortunately, ads appear on the results pages; these are not annoying.