For more information on using the signs see Search Engine Math. Boolean commands and the mathematical signs are the most important basic search strategies. Whether one works better varies from search to search. Quite often it is necessary to conduct both types of searches and to try the searches on more than one search engine. When combining url, domain or title searches with other commands put the other commands first.
All websites have a domain at the end of their web address.
Government websites are in the .gov domain, nonprofits in the .org domain, etc. Alta Vista, Northern Light and some other search engines let you search by domain. You can search for all pages that link to a certain website. Doing this is a good way to learn about new websites on a particular subject as similar websites link to one another. This search will find all websites that link to the National Law Enforcement and Corrections Technology Center.