After performing substantial research on behalf of our client, we realized there was not a system out there that met all of their needs. (driversedsolutions.com)
But there are troubling instances in which an undisclosed financial tie has created after - the - fact problems for substantial research projects. (dotearth.blogs.nytimes.com)
A thorough, sophisticated literature review is the foundation for substantial research. (essayscouncil.com)