· Don't forget that search engines -- google.co.uk; altavista.com, etc. -- allow you "advanced search" options such as searching by date, domain type (e.g. .edu, .org), country, and so on.
· Make full use of such characters as *, + and -
· Put your search term in " " to ensure that words appear next to each other.
· Remember that there are "Help" pages to help you!