Censys expands queries to provide additional functionality. For example, the query a:zmap.io
executes a DNS lookup and expands to ip:126.96.36.199.
Your query was changed from:
ip:188.8.131.52 OR ip:184.108.40.206 OR ip:220.127.116.11 OR ip:18.104.22.168 OR ip:22.214.171.124
If this isn't what you intended, you can run your raw query without expansion.