Sure there are some other possible answers, but I can't tell u here, as they are from russian mat, and I'll be kicked out of this forum pretty soon then. Russian mat is much stronger and offencive then any english curse.
Have fun!
rachelc, guess it should be something like 'gavn
o', d'er'm
o' (both mean 'shit') U cann add 'vot' before to get something like 'what a...'. 'Eto' on the first place will give U 'this is'. U can also use 'atst
oy' and some other words i can't tell u here for the reason I explaine above