Censys expands queries to provide additional functionality. For example, the query a:zmap.io
executes a DNS lookup and expands to ip:18.104.22.168.
Your query was changed from:
parsed.tbs_noct_fingerprint: 9602bd412e9fb63d5ba4757068ed8a5523fa0b5492750c1dc86cd7ad7960c8f6 and precert: true
parsed.tbs_noct_fingerprint: 9602bd412e9fb63d5ba4757068ed8a5523fa0b5492750c1dc86cd7ad7960c8f6 AND precert: true
If this isn't what you intended, you can run your raw query without expansion.