I think you have some great feedback here but for me it also highlights how subjective search results can be for individuals - for example, these false positives that you mention (b2, b3) appear as the top result on Google for me for that query.
It makes me think there must be some fairly large segment of the population that want that domain returned as a result for their query, no?
It makes me think there must be some fairly large segment of the population that want that domain returned as a result for their query, no?