I went and searched it for you, only because I was also curious. Take what I say here with a grain of salt since this is only the result of a cursory online search.
Hashem literally translates to 'the name' and is one of their ways of referring to God without directly saying His name. (They have a few ways to do this, somewhat dependent on circumstance, but since they're also fine just saying 'God' it all seems rather like pretentious/self-important twattery to me.)
Yeshiva is a sort of private Jew school where they apparently study the Torah and Talmud in depth for several hours a day in addition to the 'normal' studies that are needed to succeed in the modern world (like math, science, etc.) It's apparently more an Orthodox thing and anecdotally seems to be where they're taught to rules-lawyer everything and find loopholes in texts, amongst other things.
Hashem literally translates to 'the name' and is one of their ways of referring to God without directly saying His name. (They have a few ways to do this, somewhat dependent on circumstance, but since they're also fine just saying 'God' it all seems rather like pretentious/self-important twattery to me.)
Yeshiva is a sort of private Jew school where they apparently study the Torah and Talmud in depth for several hours a day in addition to the 'normal' studies that are needed to succeed in the modern world (like math, science, etc.) It's apparently more an Orthodox thing and anecdotally seems to be where they're taught to rules-lawyer everything and find loopholes in texts, amongst other things.