The phrase "a more complex form" is correct and usable in written English.
It can be used when discussing variations or types of something that are more intricate or detailed than a simpler version.
Example: "The study revealed that the phenomenon could be observed in a more complex form, which required further analysis."
Alternatives: "a more intricate version" or "a more elaborate type".
Accordingly, the music is static and subdued, based on a simple melody and its organic growth into a more complex form.
A more complex form of protractor, designed for plotting the position of a ship on navigational charts, was invented in 1801 by Joseph Huddart, a U.S. naval captain.
Before he could confront the history of the Roman Empire, Gibbon had to invent a more complex form of historical analysis, one that successfully wove careful research and philosophical argument into a sustained, readable narrative.
As the territory of the Ottoman principality expanded, however, and the Ottomans inherited the administrative apparatus left by the Byzantines, that simple tribal organization was replaced by a more complex form of government.
A more complex form of realistic thinking underlies the ability to identify or use a class of items, as in selecting several different kinds of triangle from an array of other geometric figures.
And the traffic between the exotic elephant and the French nursery is already implied, in a more complex form, in Matisse's "The Moroccans," of the same year, in which the remote decorative style of French-colonized Africa is rephrased in terms of the metropolitan faux-naïf.
Two bubbles together form a more complex shape: the outer surfaces of both bubbles are spherical; these surfaces are joined by a third spherical surface as the smaller bubble bulges slightly into the larger one.
The other compounds form a more complex pattern similar, but not identical, to the previous work.
The flat syllable showed a more complex pattern of change, as frequency formed a bimodal distribution.
A new Constitution, passed last year, sets up a bicameral national Parliament, 14 regional parliaments, a president, a cabinet and new government institutions that will give military rule a much more complex form.
Williams [9] and Wake [10] have proposed that the distribution of sentence lengths is lognormal (without providing an explanation for this regularity), while Sichel criticized this approximation and used a much more complex form of the distribution [11].
