My understanding is only one Segmentation may be used within an asset for making one or more sections Dynamic.
If you wanted to do the above, you should create a Segmentation with the cross-tabs desired:
Alternatively, you can use Velocity Scripting to more accurately do what you want.
Slightly wrong here -- if you use a Snippet that is Dynamic, then you can do what you want...within limits.
But Snippets are generally repeatable modules to be inserted separately to your Module. It's write once, change everywhere kind of thing.
I have used different segments for dynamic content within emails. When you make the content dynamic it will ask you what segmentation you want to use.