Hi Bitz,
Could I check if you are using the quotation marks (" ") in your query?
Something to note is that the removal of stop words does not kick in for queries using the phrase operator.
e.g. json result for the query for query and operators on the Funnelback documentation website:
json result for query for "query and operators" on the same collection
Hope this helps.
Thanks,
~Gioan

