[support] View that renders multiple object types. Possible?

[Unai Rodriguez]

Dear All,

We are trying to build a page where a user can SEARCH for (at least) the
following object types: USERS, COMMENTS and NODES.

Ideally we would like to use ONE VIEW only which renders ALL of these
mentioned TYPES. 

How could we achieve this? Would anyone suggest module(s) or technique(s)
to get this working?

Thank you so much,
unai