Updated 01/12: Added language translation
You pick up your phone and say “OK Google”... and then what? Your phone is listening. The microphone icon is pulsing. What do you say to your phone? What can you say to it? Google Now’s voice function has become surprisingly robust over the years.
Here’s a list of just about everything you can say to Google Now. Try experimenting with different phrasing, you’ll be surprised how much it understands. The part of the phrase in [brackets] can be replaced with any similar term you choose.
If Google Now doesn’t get your spoken commands right, you can correct it by saying “No, I said...” and trying the phrase again.
General information
How old is [Neil deGrasse Tyson]?
Where was [Louis C.K.] born?
Define [colloquial] (Or “What does [colloquial] mean?”)
What time is it in [Tokyo]?
Search for [photography tips]
Show me pictures of [the Leaning Tower of Pisa]
Do I need an umbrella today? What’s the weather like? What’s the weather in [New Orleans] [this weekend]?
Source:
http://www.greenbot.com/article/2359684/a-list-of-all-the-ok-google-voice-commands.html