"complex terms" is correct and can be used in written English.
You can use it whenever you are talking about something that has complicated language or concepts. For example, "The legal document contained some complex terms that were difficult to understand."
This is especially true in sentences that are already burdened with several complex terms and ideas.
But Ms. Mutter sees her relationship to society in more complex terms.
The suit, filed last week in Los Angeles County Superior Court, centers on complex terms in Mr. Wolf's contract.
Under the complex terms of the revised settlement, some 60 investors who chose not to join can come back in.
They entail negotiating complex terms of engagement along with how revenues, physical assets, and data will be shared.
Not, however, in the way we might expect, but on complex terms, involving quite a few of the other citizens of Holt.
But as with much of the story, some of the same people cited in the official account later described Munero in softer, more complex terms.
Under the deal's complex terms, News Corporation spent $100 million for two million shares of WebMD stock at $50 a share.
She teased her students with the names of the treatments, deliberately mispronouncing complex terms such as 'bilateral pelvic lymphadenectomy' (removal of the lymph nodes).
What we then find is a situation where; Those who do write articles on the subject are too technical and use too many complex terms (jargon and semantics).
He has a degree in finance from the University of Southern California, and he speaks in complex terms about his life in the Soviet Union, a life that is infused with tones of gray, not simply black and white.
