Follow the link and search

http://positions.dolpages.com/

Follow the link and search

http://positions.dolpages.com/

Thank you for the comment @Muhammad Ismail.

In that website posts are very old. Even 2 years back post only there.

Its not showing current vacancies.

Dear just register your email there. You will get updated email every day.

Regards

Okey Thanks @Muhammed Ishmail

It depends on where would you like to study

For european countries you can search into these websites:

https://www.daad.de/en/

https://www.jobbnorge.no/search

https://www.findaphd.com/

https://scholarship-positions.com/

and etc..

For canada and USA,

You have to check the website of each universities and check the research area of their faculties and email directly to the prospective supervisor and ask about vacancy, your research interest and funding.