The fewer citations, the better, then your research is more original! :)

Ask a librarian for help.

Keyword search [from the field and articles].

Mine bibliographies of articles you find.

Search multiple databases.

Keep track of how you search.

Your discussion should also draw on the literature that you introduced in the literature review section, so you could start there. How do your findings relate to other studies? What studies have similar findings? What could account for any differences? In this process you will probably come across more studies to discuss.

Hello Dr Sameer Patankar

Following on from the comment that this highlights that your work is original, I would EMPHASISE that in my discussion and say exactly that.