I don't quite agree with YouTube's captions. I hear this:
So one take-home message here is that the more features, the more co-variance, the more attributes, the more variables you have to start with, the larger the space that you're searching of solutions.
I find "that you're" easier to parse here than the "at your" in the caption.
There is a pause just before the phrase "of solutions". It seems reasonable to interpret that pause as signaling an after-thought, a late realization that he wanted to specify which space. Over the course of the lecture, he refers to several different spaces, including input space and concept space, as well as solution space.
If we assume that "of solutions" is an after-thought, we can paraphrase his statement with the phrase in question placed more naturally:
So one take-home message here is that the more features, the more co-variance, the more attributes, the more variables you have to start with, the larger the space of solutions that you're searching.