Searching in multiple databases?!

Notes help said:“Use SearchSite URLs for text searches in multiple databases.”

But i am confused.When i use SearchSite , i always get the results in one database.

my url :

http://localhost/1.nsf?searchsite&query=male

There’s no argumentList to search 2.nsf and 3.nsf.But i don’t know where to be given.

So how should i do?

If i misconstrue searchsite ,how would i go searching in multiple databases?

Subject: Read the help on domain search (WAS: Searching in multiple databases?!)