I’ve personally never hit Bis and Tris together, but that’s because I structured my own programs (and in regard to my individual response to training) to place them with larger muscle groups that overlap to some degree.
Exercise wise, there really is no magic program or exercises. There’s the old story of Shawn Ray being approached by a young wanna be bodybuilder. The young kid asked him what exercises he used to get his arms so big. Shawn replied “the same exercises you use bro, the same ones.”
The point of the story is that Shawn obviously put a hell of a lot more into each and every rep that he did so that he could make the most of his genetics, adherence to diet, supplements etc. That’s really the only way anyone can maximize what is in their hands to control.
S