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:
parsed.names: (dns_names or *.tradelab.fr)
to
parsed.names: (dns_names OR *.tradelab.fr)
If this isn't what you intended, you can run your raw query without expansion.