I often find that too, that it doesn't work. I tried different search engines and they tend to have some advantages and some disadvantages, but overall, it does

I often find that too, that it doesn't work. I tried different search engines and they tend to have some advantages and some disadvantages, but overall, it does not help. (Although, some things might just be obscure and difficult to find anyways, possibly; and, sometimes, it is difficult to know what search terms to use. But, sometimes even if I know what is needed and put it in exactly, still it does not work.)