When you search your completed orders in Shop Manager, using words found in the Title of a listing, cancelled orders no longer show up in the results. This is a VERY recent change, and I hope very much that it is a bug that will be fixed soon.
It is now slightly different, I am able to search for MOST cancelled orders, using words and number found in the listing title, EXCEPT the few that were cancelled by Etsy. 2/3 of those cancelled orders have "Payment Processing", the other cancelled order had originally shown as payment completed.
In my second shop, FashionFallback, there are two orders that were cancelled by Etsy, both show as "payment processing". Weirdly one order does show up in search which is unexpected. However the other does not show up, just like the cancelled orders at VogueVixens