Looking on the internet deeply has found these results:

anything is the most popular phrase on the web.

any thing 1747,000 results on the web	anything 1951,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
We were allowed to do anything we wanted to. If you're not sure what to say, just say anything that comes to mind. That dog will eat almost anything. We didn't ... Anything definition, any thing whatever; something, no matter what: Do you have anything for a toothache? See more. Anything, which means “a thing of any kind,” can be used in many more contexts than any thing, which is rarely used at all. Below are some examples of the ... Jul 4, 2011 ... I think I would find myself intuitively using "any thing" on those rare occasions that "thing" needed to be a 'noun in its own right', and contrast ...	Interiors, exteriors, anything really. Because the Philadelphia D.A. never misses anything. Your grandfather didn't actually do anything. Bobbi can pretend to like anything. But nobody admits to seeing anything. Unlike anything he had ever heard. Just don't tell Crosley anything. Heather said she would do anything for Caitlin.

any thing

1747,000 results on the web

anything

1951,000,000 results on the web

More popular!

We were allowed to do anything we wanted to. If you're not sure what to say, just say anything that comes to mind. That dog will eat almost anything. We didn't ...
Anything definition, any thing whatever; something, no matter what: Do you have anything for a toothache? See more.
Anything, which means “a thing of any kind,” can be used in many more contexts than any thing, which is rarely used at all. Below are some examples of the ...
Jul 4, 2011 ... I think I would find myself intuitively using "any thing" on those rare occasions that "thing" needed to be a 'noun in its own right', and contrast ...