ISBN Search, does it work?

ISBN search doesn;t work for me, I tried the following 4 books:
Robert Jordan - Wheel of time IV - A Crown of Swords
Thea Beckman - Kruistocht in Spijkerbroek (Crusade in Jeans)
bolman and Deal - Reframing organizations
Tolkien - LotR, illustrated by Alan Lee
All searches returned the following:
The item id you requested to add does not exist in our database and does not return any results when we query amazons database.
Robert Jordan - Wheel of time IV - A Crown of Swords
Thea Beckman - Kruistocht in Spijkerbroek (Crusade in Jeans)
bolman and Deal - Reframing organizations
Tolkien - LotR, illustrated by Alan Lee
All searches returned the following:
The item id you requested to add does not exist in our database and does not return any results when we query amazons database.

Found the problem
ISBN number is given as follows:
1-85723-403-0 (robert jordan one)
But if you enter it with the "-" it gives no result. Maybe add that it should be written without the "-"
/edit: works without the "-" without trouble.
searched on amazon.uk without the "-" and it found the book, now trying with listal
/edit2: works now, np
ISBN number is given as follows:
1-85723-403-0 (robert jordan one)
But if you enter it with the "-" it gives no result. Maybe add that it should be written without the "-"
/edit: works without the "-" without trouble.
searched on amazon.uk without the "-" and it found the book, now trying with listal
/edit2: works now, np

Ok i'm now removing -'s before I query amazon. Thanks for posting!

i also added some (german) books.
5 out of the 8 i tried to add didnt work too.
5 out of the 8 i tried to add didnt work too.

Post the isbns and I will investigate