Double quotes "[+keyword]"
Used for exact match
Colon : [+file type]
Search for files
site: [+url]
Search for content within a specified webpage
Minus - [+unwanted content], plus + [+wanted content]
Used to specify exclusion or inclusion of content
Slash /
Directly return to the input state of the search box
Double dots .. [+location]
Search for content within a specified location
intitle: [+keyword]
Search for content on a specified topic