"to have a deeper understanding" is correct and usable in written English. You can use it when you want to express the idea of gaining increased insight into something. For example, "I want to have a deeper understanding of the history of this region.".
I wanted to do a degree in African politics because it's important to have a deeper understanding of the place from where I originated".
Being "competent in Microsoft Office" is not going to be good enough in the 21st century workforce – employees will be required to have a deeper understanding of how technology works and have the skills to create digital content.
So you really want to have a deeper understanding of where the relationship comes from — "microfoundations" — so that you won't be caught off guard if it does change in response to policy.
If such systems have such a model of the underlying human processes, they can use this to have a deeper understanding of the human.
"You really have to have a deep understanding of the female body," she said.
It starts with the auction items and to have a deep understanding of them.
One unwitting volunteer gets to have a deep understanding of this, and for him to experience real and lasting change, I have to push him to the extreme".
Awesome tool! I started using it one year ago and I never had to look for another app
Ha Thuy Vy
MA of Applied Linguistic, Maquarie University, Australia