Censys expands queries to provide additional functionality. For example, the query a:zmap.io
executes a DNS lookup and expands to ip:141.212.120.90.
Your query was changed from:
lvps92-51-145-173.dedicated.hosteurope.de
to
lvps92-51-145-173.dedicated.hosteurope.de
If this isn't what you intended, you can run your raw query without expansion.