google
32bits
did you search for
lead oxybromide
or
"lead oxybromide" - i.e. the lead and oxybromide are a phrase.
Google does return results for the former, but where it refers to lead in one part of the document and an different form of oxybromide - like calcium oxybromide.
If you specify the phrase, only the ATSB and Aus papers quoting same return hits. Same with Copernic.