Please study my presentation on Research Methodology posted at
https://www.citehr.com/150459-resear...-download.html
Kindly give more information about where you intend to do your PhD and in what mode and what access you have to do primary research. I am assisting three other students at Citehr and I can put you in touch with them.
I wonder why you chose to post the query without disclosing who you are!! Please correct the grammatical mistake in your post.