To ensure meaningful results, the four boxes in the Search Term area should only be used for search terms that really mean the same thing. We recommend this because we can't imagine a use for a list of domains that include either "cooking recipes" or "golf drivers" somewhere in their site. Perhaps someone will find a use for this, but at first ensure your results are meaningful by keeping all four search terms on closely-relate topics. For example, you might choose to search on mindmapping; mindmaps; mind mapping; mind maps.