It depends on different people. but mostly used:啊!to express surprise or something you cannot stand. 呸!is a little bit bad language to express disdain. 哎呀:most girls like to use it to express annoyance, boys do not use them ofen, because it sounds like a girl. 哎/唉 to express disappointed or tired. You can just use the words you're used to. I think people understand them by tone, not the word itself.