Here's another interesting google/not google example.
With exponential distribution, I had distribution and I knew it was some sort of statistical distribution but it's not an area I know particularly much about and I had tried all both the distributions that I could think of.
My personal rules say that googling "list of statistical distributions" and trying them all would be cheating but research isn't. My first source was to look for a 20 year old teach yourself statistics book that we had at some point but I couldn't find it. So how could I research? It had to be on a statistics syllabus somewhere. I tried BBC bitesize (OK, I googled BBC bitesize to take me to the right site) but that didn't help. Then I googled Edexcel and went to their website. Searched subjects for GCSE statistics and looked at the syllabus. It obviously was too low a level so I looked for the A level syllabus instead. A bit of scanning through the syllabus and I found the answer.
With this one, I might have got exponential in the end if I had just kept throwing mathematical terms into the search box but, equally, it could have been named after someone like Poisson (yes that was one that I actually did try!) and it would have taken a million years, or at least until 5pm the next day.