The phrase "a considerable number of studies" is correct and usable in written English.
You can use it to talk about a large quantity of reports, investigations, or tests that have been done on a certain subject. For example: "A considerable number of studies have been done in recent years to explore the effects of climate change on the environment."
Barclays also posted an online response: "A considerable number of studies have demonstrated that financial flows have little or no impact on commodities prices.
This has motivated a considerable number of studies [1 5].
A considerable number of studies have been carried out on various control strategies.
A considerable number of studies have calculated accumulation rates of aboveground biomass in regrowing tropical forests (e.g., [28 37]).
In the last decade, a considerable number of studies have been made on oscillation and nonoscillation of solutions to various types of dynamic equations on time scales.
However, there is less work that focuses on designing algorithms for the general case (mgeq3) compared to a considerable number of studies on the special case (m=2).
A considerable number of studies have been performed recently on mobile peer-to-peer networks (MOPNETs), as the number of services based on mobile devices has increased.
A considerable number of studies have researched the effects of the cutting speed, feed, depth of cut, and other factors on the surface roughness.
There have been a considerable number of studies focused on fabricating small nanogratings on large areas to realize high performance devices.
The controversies are triggered by a considerable number of studies showing beneficial, harmful, and/or insignificant effects of oxygen therapy on outcome in different subgroups [[2]-[15]].
Since the last two decades, training students in self-assessment has gained increasing currency and has been investigated in a considerable number of studies.
