"deep and thorough understanding" is a perfectly usable phrase written English.
You can use it anytime you want to describe a comprehensive knowledge of something. For example, "She has a deep and thorough understanding of modern business practices."
To grasp the full potential of these assets, a deep and thorough understanding of an asset's complete lifetime is needed.
This involves calling the companies up, calling their competitors up, and gaining a deep and thorough understanding of the growth opportunity.
Ultimately, developing chemistry with clients is about developing a deep and thorough understanding of all of the varied aspects of a client's financial life.
She is interested in exploring the intersection of mindfulness and neuroscience, in order to foster a deep and thorough understanding of meditation as mental training for a more fulfilling life.
This is one more reason why it is important to directly address the facts through research, and create a deep and thorough understanding of women's emotional experiences with abortion.
For example, it is possible to conduct research that provides a deep and thorough mechanistic understanding of the critical events in the toxicity of a particular agent thereby leading to qualitative and quantitative considerations of key events.
A number of previous encounters, for example, centered on student misunderstanding of the definition of a scientific theory versus a law or hypothesis; workshop leaders and teachers discussed the importance of a deep, thorough understanding of the scientific method to help students understand how scientific theories come into existence.
The ads will urge turning to The Economist for a deeper, more thorough understanding of what goes on in the world.
