How to automatically pull a sentence containing word X in a given language?

For example let's I want a real world sentence that contains the word "chercher" in French. (Eventually, the word & the language will vary)

So I would like to create a method for automatically pulling a sentence in language X for word X.

Is there a way to pull this automatically from an online resource, if so, how? How does one go about doing this? Explain like I'm 5, please!