The phrase "about a considerable" is not correct and does not form a complete or clear expression in written English.
It may be intended to describe a significant amount or degree of something, but it requires additional context or words to be meaningful.
Example: "The report discusses about a considerable amount of data collected over the years."
Alternatives: "regarding a significant" or "concerning a substantial".
It is demonstrated that the presence of porous coatings brings about a considerable enhancement of the thermal stability of the system.
This microstructural evolution brought about a considerable increase in both hardness and strength values of IF-steel without considerable decrease in ductility values.
Fracture mechanics tests showed that the addition of silica nanoparticles up to 10 wt% brings about a considerable enhancement in fracture toughness and an increase in the critical crack length for the onset of crack propagation.
He reestablished Zoroastrian orthodoxy, and, although some persecution of Christian communities occurred during periods of tension with Byzantium, the restoration of peace brought about a considerable amount of religious tolerance.
Winston was a lawyer and antiquarian who associated with various London glaziers and, with the technical help of James Powell and Sons, brought about a considerable improvement in the technical quality of coloured glass.
The Iranian cultural heritage brought about a considerable effect on teachers' personal styles.
A friend told him he could make 120 yuan an hour for the work (about $22)—a considerable sum in China, where a typical lunch costs 10 yuan.
That bunch of long, wet branches was wrapped in cellophane and handed over for the equivalent of about $8, a considerable expense in a country as poor as Yemen.
They went on talking about this for a considerable time, in low voices, but so forcefully that people passing through the car sometimes looked surprised, or even offended, as people can when they overhear debates that seem unnecessarily abstract.
Given the private nature of intimate partner violence and frequent reluctance of women to talk about it, a considerable amount of its use is never known about by those outside the intimate relationship (Garcia-Moreno et al. 2005).
About 1247 a considerable change took place in Bacon's intellectual development.
