In Hebrew we usually use "חחחחח" it's actually translates as "hahahaha", but because it's abjad vowels aren't written, just a default laugh
For hehehe I seen people use חיחיחיחי (heeheeheehee)
For the rest it's a bit more complicated, because of the lack of vowels, but it's usually just a combination of י ([j] or ee) and ו (oo or o or v)