Looking on the internet deeply has found these results:

I have a special interest is the most popular phrase on the web.

I have a extensive interest 10 results on the web	I have a special interest 128,200 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.	President of the Committee on Transport, as well as on a more general level. I have a special interest in issues of road safety, both as a member and Vice I have a special interest in pulmonary pathology and therefore I attend MDT meetings pertaining to lung cancer and mesothelioma treatment. I have an interest in ... As a citizen of the Balearic Islands I have a special interest in this. En tant que citoyen des îles Baléares, je suis particulièrement intéressé par cette question. So I have a special interest in what they're thinking and who they are and who's hiding behind those eyes and how did he get there, and what's the story, really?

I have a extensive interest

10 results on the web

I have a special interest

128,200 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.

President of the Committee on Transport, as well as on a more general level.
I have a special interest in issues of road safety, both as a member and Vice
I have a special interest in pulmonary pathology and therefore I attend MDT meetings pertaining to lung cancer and mesothelioma treatment. I have an interest in ...
As a citizen of the Balearic Islands I have a special interest in this. En tant que citoyen des îles Baléares, je suis particulièrement intéressé par cette question.
So I have a special interest in what they're thinking and who they are and who's hiding behind those eyes and how did he get there, and what's the story, really?