"substantially developed" is grammatically correct and can be used in written English.
You can use this phrase to describe something that has been extensively worked on or improved. Example: "The research paper was substantially developed over the course of several months, with numerous revisions and additions made to strengthen its arguments."
Similarly, the workers' technical and managerial skills must be substantially developed before any self-management programs can be undertaken.
This work analyzed the refractive and reflective properties of lens and mirrors based on various conic sections and substantially developed Johannes Kepler's theory of the telescope.
Tenth-century glosses to Latin texts in manuscripts belonging to the monasteries of San Millán de la Cogolla and Silos, in north-central Spain, contain traces of a vernacular already substantially developed.
The first to be proposed (by Walter Heitler and Fritz London in 1927 and substantially developed by John Slater and Linus Pauling in the 1930s) is valence bond (VB) theory.
While India is highly dependent on Iran for oil (some reports say it is the largest customer of Iran's oil) and as a market for rice exports, the relationship between the two has not substantially developed in other ways in recent years.
During the 1960s he substantially developed the idea.
Our results substantially develop and improve the corresponding results of [Chen et al. 2007 and Iiduka and Takahashi 2005].
Used consistently, they can substantially develop skills.
We predict that the congruency effect will weaken by age because inhibitory control substantially develops in children during the age range examined.
Importantly, by invoking a novel kinase as a central regulatory node, this study substantially develops our understanding of the poorly characterized abscission checkpoint.
This theme reflects a strong emphasis on the need to substantially develop integrated/inclusive education (IE) in schools so that "where possible, disabled children will be referred to local village schools" (#7 Africa).
