Answer: If you are searching for a keyword phrase the search will try to match both words with product details.  If both words are in the same location (e.g. the description or SKU) then it will match. However, if one word is in the description and another in the SKU it will not match.  You could say, the more general the search the greater the results.  I believe what you are asking for is that each word in a phrase is broken out into a separate search, but one in which all results are grouped together.  Unfortunately, that takes a lot of server resources and could become slow.  For instance, if the customer searched for 3 or more keywords and the algorithm had to check each field for each word.  We do have the issue in our system, but there will not likely be a solution in the very near future.  The good news is that most customers do not search by a SKU and keyword.  If they know the SKU then they do not (usually) try to narrow it down further, as the SKU usually represents one product.  Try to make sure most search terms related to products are contained in the description for best search performance.