"Aii-yaah!!", you might hear that every so often from an Asian person. It's equivalent to "Jaysus!" or "Feck!" or "Darn!"... you get my drift. The shorter "Ai-yah!" tends to be uttered when you, say, stub your toe, or drop something on the floor. It's like a little exclamation.
I am commenting generally from Cantonese-speaking point of view. I find Cantonese language can be vulgar, like any other language, I suppose. You would have the equivalent of the F-word before, during and after a sentance, followed by more mumbling. It's sort of like Bus Uncle.
The phrase I grew up with is "Yau mo gau chaw!" i.e. "WTF!" or "Oh no!".
It can be quite colourful if you wanted it to be. But the Chinese language can be vicious, that even words can hurt. So much for sticks and stones...