As stated in the comment, if you go on this Bing help page, you will find a list of advanced search operators.
They are:
contains:
filetype:
inanchor:
inbody:
intitle:
ip:
language:
loc:
(or location:
)
prefer:
site:
feed:
hasfeed:
url:
Please note that:
Some features and functionality described here may not be available in your country or region.
Disclaimer: As the user that commented on the post doesn't have his/her account linked to webapps.se, I took the liberty to add the answer with the sole purpose of having a clear answer.