Looking on the internet deeply has found these results:

market research is the most popular phrase on the web.

marketing research 115,700,000 results on the web	market research 154,700,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Legal accounting, market research, consultancy The Polish office of Millward Brown International, one of the largest independent market research companies. UN has even done market research for us I'm going to do some market research. There's a market research assistant post. Collective investments cover the promotion of fishery products, market research and technical support for aquaculture undertakings. According to the Metal Expert market research company, FeSi production capacity in Russia amounts to some 900000 tonnes. The market research tells us that customers were uncomfortable with the name Anusol.

marketing research

115,700,000 results on the web

market research

154,700,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Legal accounting, market research, consultancy
The Polish office of Millward Brown International, one of the largest independent market research companies.
UN has even done market research for us
I'm going to do some market research.
There's a market research assistant post.
Collective investments cover the promotion of fishery products, market research and technical support for aquaculture undertakings.
According to the Metal Expert market research company, FeSi production capacity in Russia amounts to some 900000 tonnes.
The market research tells us that customers were uncomfortable with the name Anusol.