The phrase "adds a level of complexity" is correct and usable in written English.
You can use it when discussing a situation, concept, or process that becomes more intricate or difficult due to additional factors.
Example: "The new regulations add a level of complexity to the compliance process that businesses must navigate."
Alternatives: "introduces additional complexity" or "creates a more intricate situation."
This was one of the things that adds a level of complexity to the book and helps it transcend any kind of narrow categorization.
"It adds a level of complexity to the purchase of music," said John T. Gourville, a professor at Harvard Business School who has studied what is known as psychological pricing.
"Any time you are dealing with a legal case, it adds a level of complexity that is a challenge to work with, especially when you are indirectly involved," she said.
"It adds a level of complexity," says a Lehman Brothers managing director, Barbara Byrne.
Of course it adds a level of complexity and it might get confusing once we have 30 different extensions in each core app.
Given these findings, it is readily apparent that the addition of serum proteins adds a level of complexity to our experimental understanding of NP-cell interactions.
Older adults often have both medical and psychiatric problems, adding a level of complexity to ensuring appropriate and successful treatment.
A tree is a living, growing thing, Mr. Nelson and Mr. Jacob remind clients, adding a level of complexity to construction that is absent in building, say, a fishing cabin.
Planning and doing research in an environment where the culture is different can, however, add a level of complexity to the research.
The pro-angiogenic role of the recently described NK cell-like type 1 innate lymphoid cells (ILC1s) and their phenotypic resemblance to NK cells are confounding factors that add a level of complexity, at least in mice.
The recommendation is certain to add a level of complexity to one of the most vexing debates in medicine: how men older than 50 should deal with the threat of prostate cancer.
