"Necessary research" refers to the investigation or study that is required or essential in order to accomplish a specific goal or to gain necessary knowledge about a particular subject. Full definition
Smart consumers understand the importance of doing necessary research before making any major purchase decision. (carinsurancequote.net)
-- Assisted scientists and engineers with research development studies by conducting necessary research and reporting findings to them. (resume-now.com)
Provide necessary research about the result of concentrated state income distribution on municipal public security issue. (resume-now.com)