We are looking at some regular queries that seem to not be returning good results for users. A good example might be something like "555 timer" . This currently returns a bad page (whereas "555-timer" returns a good page), part of the reason we are working on these kinds of things.
Regardless, we were wondering about your expectations from part search: Should you be able to type plaintext? Do you do that on other search platforms? How does it work for you?