This sounds very logical explanation and makes lot of sense. The way results are presented in this OR based setup can probably be improved. For example, by sho

This sounds very logical explanation and makes lot of sense. The way results are presented in this OR based setup can probably be improved. For example, by showing which of the keywords each result contains, or filter out based on ranking or number of keywords, or specifying that results must contain at least that specific keyword. This should reduce the number of results significantly.