The phrase "original research" refers to conducting a study or investigation that no one else has done before. It involves exploring new ideas, theories, or concepts and gathering evidence or data to support them. Full definition
Objective To examine changes in representation of women among first authors of original research published in high impact general medical journals from 1994 to 2014 and investigate differences between journals. (bmj.com)
She was awarded a scholarship to conduct original research in women's health. (marigoldmidwifery.com)
Students are conducting original research on the weather, for instance, using some of the same tools as professional scientists, then sharing their data and results with others all over the globe. (edutopia.org)