Looking on the internet deeply has found these results:

research into is the most popular phrase on the web.

research on 17,210,000 results on the web	research into 130,200,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
I'm doing a little research on roof repair. Merlin was conducting research on some kind of new invention. This revenue would be used for financing research on coal and steel outside of but complementary to the RTD framework programme. I have the same oppo research on you. I've done some research on you. I've been doing some research on you, Miss Fisher. The 2014 guidelines on key technologies mention research on solar cells explicitly. conducting research on national, Community and international legal issues,	More funding is needed for research into this. We really do have to invest in research into energy sources. Just a little research into statistical probabilities. I've been doing some research into James's family. We have to have funding for major research into the status of disabled people. Thus, further research into all the options should be pursued. Recent food crises have shown the importance of research into the substances contained in animal feed. One of the major challenges is finding concrete applications for research into environmental technologies.

research on

17,210,000 results on the web

research into

130,200,000 results on the web

More popular!

I'm doing a little research on roof repair.
Merlin was conducting research on some kind of new invention.
This revenue would be used for financing research on coal and steel outside of but complementary to the RTD framework programme.
I have the same oppo research on you.
I've done some research on you.
I've been doing some research on you, Miss Fisher.
The 2014 guidelines on key technologies mention research on solar cells explicitly.
conducting research on national, Community and international legal issues,

More funding is needed for research into this.
We really do have to invest in research into energy sources.
Just a little research into statistical probabilities.
I've been doing some research into James's family.
We have to have funding for major research into the status of disabled people.
Thus, further research into all the options should be pursued.
Recent food crises have shown the importance of research into the substances contained in animal feed.
One of the major challenges is finding concrete applications for research into environmental technologies.