For example: I thought that the concept of God is so ubiquitous that it will be very difficult to search for somebody who doesn't know it. This is probably an example of a known needle in an unknown haystack . Then I remembered vaguely that in the Bible there is a verse about this… something like people said to me where your God is? So I entered the keywords "where your God is" (in Hebrew) and got the verse I needed on Psalms 42:3. Then I entered the location Psalms 42:3 and got it in English:
My tears have been my food day and night, while they continually say to me,
Where [is] thy God?
At dinner I spoke about all this and one of my guests, a young girl, told me that she played in Brecht's Mahogany in Hebrew and there was a dialog where the good guy said something about God and the bad guy asked: God who?
I reckon if I'll go to an autistic and ask "who is God?" I might get the answer "Who is Who", but as far as searching the Web is the question I think this is a good example of a difficult search, no matter which search engine you choose.