Looking on the internet deeply has found these results:

what doesn't is the most popular phrase on the web.

what don't 11,430,000 results on the web	what doesn't 113,200,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
Question is, what don't they do? Sir, what don't you understand? Charlene, what don't you understand? More importantly, what don't you see here? Tobias, what don't you understand? Annie, what don't you understand? It's more like, what don't I do? It's a long story.	But what doesn't make sense to me... ...is these other wells. I'm saying, you find a way to counsel patience, desist coming after what doesn't belong to you, and everybody wins... Roger believes what's important on screen is what doesn't happen. I tell you what doesn't work is white wine. I'll tell you what doesn't make any sense. You know, with what doesn't happen next. Guess what doesn't fit her anymore. Well, you can't hunt what doesn't exist.

what don't

11,430,000 results on the web

what doesn't

113,200,000 results on the web

More popular!

But what doesn't make sense to me... ...is these other wells.
I'm saying, you find a way to counsel patience, desist coming after what doesn't belong to you, and everybody wins...
Roger believes what's important on screen is what doesn't happen.
I tell you what doesn't work is white wine.
I'll tell you what doesn't make any sense.
You know, with what doesn't happen next.
Guess what doesn't fit her anymore.
Well, you can't hunt what doesn't exist.