Dear Aspirant, for  research internships you need to find your areas of interest and search accordingly. Check  websites of different colleges and universities, there go through faculty page and look for professors having research areas of your interest. In most of the cases professors have their personal websites , where they mention their areas of research , check those. Go through those papers , links and try to contact them through e-mail. Also connect with various people on LinkedIn associated with areas of you interest , you would get some leads :) .Also firstly try to contact professors in your institute.

Hope this  helps.