Is this referring to the languages or the countries?
Tiếng means "language" in this case (it can also mean: sound, noise, reputation/notoriety/fame and hour).
Both language and people is the correct translation.
Tôi thích người Pháp và người Đức.
Should be accepted as well.
German language is not easy though
Another guessing game. Guess the nouns. Maybe people, wine, art, architecture, ... ah ... it is language.