Is this [duolingo example] a valid sentence?

[mcpopeawesome]

Hello,

Duolingo propses:

Mit ihnen stimmt doch was nicht

As:

There's something wrong with you.

Is this a valid, correct sentence that Germans would use? A Google search yields less than 500 results world wide.

Secondly, if it is a valid sentence that Germans would use, could somebody please explain it as it makes no sense to me?

Thank you.

[IdontKnow]

That version is a bit informal. The 'normal' one would be: "Mit ihnen stimmt (doch) etwas nicht" = "Something is wrong with them". You will find a few thousand google results making combinations with doch, etwas, was, dir, mir, ihm...

[giodec]

Yep... " 'was " is kind of slang for "etwas". Like " 'ne " for " eine ".