If you're trying to find out in which transport a particular object was changed, you can go to SE03 and use the standard search transport request function. To do that, though, you need to know not only the object name but also the program type etc. - essentially, you need to specify what the entry looks like in the transport request, which may be a bit bothersome.
An easier solution is to look up the corresponding database tables correctly:
- E070 - transport request header
- E071 - transport request items (i.e. the objects contained in the request)
You want to go with E071 and enter the name of the object (or *<objectname>*) in field OBJ_NAME and the result will give you all transport requests that contain this object.