I'm seeing behavior with the knowledge searching that I can't figure out. When we search on words that start with 'infra' (examples: infrared, or infrastructure), it only searches on the part of the word after 'infra'. So it searches on 'red' or 'structure'. I've looked and 'infra' is not defined as a noise word. I even tried creating special terms for both of these words, then ran the re-index, but it still will not search on the entire word. It's happening in both our test and production environments. Anyone have any ideas why this is happening?