It’s autocomplete being based on words. It knows computer and it knows keyboard and so in English it is trivial to type computer keyboard.

In German it also knows Computer and Tastatur, but I can’t use autocomplete to type Computertastatur.

Actually I just learned I can. Apparently this word is in the dictionary. But there are just so many compound nouns, it’s impossible for them all to be in the dictionary.

To make it work in such a language it has to understand about constructing compound nouns.