Question about Outlook Express

Skydrive creates duplicate filenames by adding the machine name to the filenames like 'filename - PCNAME'- as mentioned here in several other posts...
I wanted to do a search for all these files by typing the PCNAME  into the search field but this leads to ALL files listed in the search result (why?). When I typed into the search field 'name:PCNAME' I get NO results! --> ?!? How can I do a search for all those file duplicates created by Skydrive?

Thanks
Martin