Google- Searching- Field Searching

Searching

Field	Prefix	Description	Example
Title	intitle: or allintitle:	Prefix for searching for a single word in the title. No space between the : and first word
Site	site:		cybertour site:extremesearcher.com searches the Extreme Searcher site for "cybertour"
URLs	inurl: or allinurl:	Similar to site search is URL search, searching for a specific term within a URL. Use the inurl: prefix (inurL:aLjazeera). This can be particularly useful when you do not know whether a site has a .com, .net, or .org domain, or more than one (as does Al-jazeera). Some engines also provide an allinurl: prefix search that allows you to specify two or more parts of a URL, not necessarily in a specific order
Link	link:		Among the parts of records that search engines can treat as searchable fields are the links found on a page. Using a link search to find what pages are linked to a specific site or page can be very useful for finding organizations (companies, terrorist sites, trade associations) with similar interests and that cover similar topics. You can also find out who is linking to your site.
File Type			Expect the filetype search to work with the most common file types, .pdf, .xls, .ppt, and so on, but don't hesitate to try other extensions. Though its documentation doesn't say so, in Google almost any type of file that might have a link on a webpage can be searched. (Do a search on site: gov filetype: csv to find more than 9,000 government databases that are online and downloadable.