there's allot of expression you can use for the single word but for example
Oh My God : Ya elahi ,, Ya allah ,, Ya Lal Hawl
for something goes wrong : Egyptian accent : "ma eysahesh ما يصحش ,, ya housti يا حوستي ,, ya lahwi يا لهوي ,,ya nhar aswad يا نهار اسود "
in Jordanian accent : ya weeli يا ويلي ,, ya sater يا ساتر