This webpage is not available. The webpage at http://pdf/a might be temporarily down or it may have moved permanently to a new web address.
The reason for this, is probably that anything with a slash in it has to be interpreted as a url, since there is no protocol left to make the difference between a web address and a search...
Sorry, no, it was my post that wasn't clear. That should be easy behaviour for Google to code for. The current implementation seems buggy; at least the fix wouldn't be difficult.
What you're looking for:
http://en.wikipedia.org/wiki/PDF/A
What you get:
This webpage is not available. The webpage at http://pdf/a might be temporarily down or it may have moved permanently to a new web address.
The reason for this, is probably that anything with a slash in it has to be interpreted as a url, since there is no protocol left to make the difference between a web address and a search...