self to self relationship

[listy]

Another question about related.
When i do TEL query - everything ok. But how i can do this with Search?

Trying to do this:
from pyasm.search import Search

server.set_project('testovy')

search_key = 'testovy/asset?project=testovy&code=ASSET00002'

search_type, search_code = server.split_search_key(search_key)
search = Search(search_type)
sobject = search.get_by_search_key(search_key)

related_sobjects = sobject.get_related_sobjects('testovy/asset_in_asset')

I got "Fault: <Fault 1: 'Search type [testovy/asset_in_asset?project=testovy] is not related to search_type [testovy/asset?project=testovy]'>

"