Using contextual queries.
Journal article published in 2003 by
Bob Schijvenaars,
Erik van Mulligen,
Mario Diwersy,
Marc Weeber,
Christiaan van der Eijk,
Rob Jelier,
Jan Kors,
Barend Mons 
Abstract
Search engines generally treat search requests in isolation. The results for a given query are identical, independent of the user, or the context in which the user made the request.