在这里它们没有区别,都解释为:make sb. do sth. / persuade sb to do sth.
get sb to do sth 通常是一次性的,或者是还没有做的事。
I got him to do his homework before dinner.
我让他晚饭前做作业。
get sb doing sth 通常指习惯性动作,经常性的,或者是正在做的事
It is hard to get him doing his homework before dinner everyday.
想要让他每天晚饭前做作业是很难的。
所以主要看语境,其实某些时候也算是通用,这就是不定式和进行式(现在分词)的区别之一
get to doing 开始做某事,get to do 能够做某事