While at work today I was doing some stamp research(Yes, at lunch time). I was looking at an old British Magazine that was found via Google. I searched for other volumes, I found none. I then had a thought to try Google UK. Boom, 6 more volumes. It's interesting that Google and Google UK have different Information. I could think of a number of reasons why. But, it doesn't matter.
Bottom line, When researching don't stop with one search engine try one from another country. You never know what you might find!
