long stay visa - Robuta Search

https://mv.gov.cz/mvcren/article/a-visa-for-a-stay-of-over-90-days-long-term.aspx?q=Y2hudW09NA%3D%3D

https://www.campusfrance.org/en/the-researcher-talent-passport-long-stay-visa

The "researcher-talent passport" long-stay visa allows you to pursue a doctorate, conduct research or teach in France.