This will be a tedious job to find the particular BO which are associate with screen.
For example in New Corporate Account text fields have been shown, data will save in backend(ABAP System). But same data are accessible from BO.
Now if you want to find which BO is belong to screen "New Corporate Acount"
Go to Repository Explorer and check for BO in the right hand side Business Object info you can see a field "UI Text" this field will has the exact UI name.
Please let me know if you find this helpful