Enter either a Description or a Part Number but not both at the same time.
Don't enter logical operators such as AND or OR; they will be treated as part of the search string.
This is a simple pattern matching search. You may enter part of a word (a prefix, a suffix or a root) or a number or several words. Commas, spaces and other special character are treated just like any other character.
Look in the catalog to see how Descriptions and Part Numbers are structured. Structure your search queries to look the same way.
If you want to search using original manufacturer's part numbers, delete spaces and dots and any other punctuation.
If you know the Part Number, search for it in the 'all' category if it does not show up in the category where you expect it to be.