You can try the following Google Search on our full pdf archive.
It is a bit hit and miss, Google has its own ideas of what it will index and what it won’t – but I suspect that the more it is used the better it will get over time.
Note also that, for the time being, the first few results that show up will be Google-sponsored ads from the internet – just ignore these and scroll on down! (I am working on getting rid of these.)