Which of those pages on the result page does not contain either of the phrases? For me, the first result contains both phrases (the other only in page title). The second is from the same site and lacks the "bitx" term, but it likely at some point linked to the first page, hence it's inclusion.
The problem with the "barchart.com" results is that it's some sort of a portal of frequently updating headlines, so it's not reasonable to expect the search index to always keep up to date with it.
The problem with the "barchart.com" results is that it's some sort of a portal of frequently updating headlines, so it's not reasonable to expect the search index to always keep up to date with it.