We're working on making allowances for the large number of name exceptions in different languages around the world.
And we actually did have a function in the past that looked for "de" "de la" "van" and other surname prefixes but because of the complexities of naming (some people include the "de" as part of the surname, some people don't) we decided to take the simple approach.
We will improve handling of surnames in the future.
Hi Jaiel! So, NOW must be prefix "de la" included in given or family name field? I hope, with surename, but person is sorted in alphabetic by "D". Right?