Obtain, acquire (4,2)
I believe the answer is:
come by
I believe this is a double definition.
'obtain' is the first definition.
(I've seen this in another clue)
'acquire' is the second definition.
(coming by is a kind of acquiring)
(Other definitions for come by that I've seen before include "pass" , "Secure" , "Manage to acquire" , "Encounter" , "Find" .)