Search

　

Example:

a b       search for file include "a" or "b"

a or b    search for file include "a" or "b"

a and b   search for file include "a" and "b"

　

a not b   search for file include "a" but not include "b"

　

(a not b) and c    search for file include "c" and "a" but not "b"

　

web*       search for file include words starts with "web"