C and R turn up top results with the single letter, D works if you add "language", F is more niche but not hard with some Google Fu, same with the other example

C and R turn up top results with the single letter, D works if you add "language", F is more niche but not hard with some Google Fu, same with the other examples. Not everything is easy to Google, but I find those to be very niche or technical topics, e.g. a random linker error that has many other similar terms with another set of related errors.