How to search for postings of user X with tag Y? [duplicate]

Suppose I want to search for postings of a known member John Doe under the tag Calculus. What steps do I take?

Similarly: How do I search for responses of user X to questions which have tag Y?

marked as duplicate by Martin Sleziak, JonMark Perry, Asaf Karagila♦, Najib Idrissi, user99914 Oct 5 '15 at 9:12

The search-query is

[tag-name] user:UserNumber

for all posts of the user with number UserNumber in the tag tag-name.

If you want to restrict to question or answers add is:q or is:a respectively.

You can also go to the users profile and find the tags tab: https://math.stackexchange.com/users/current?tab=tags Then click on the tag which you are interested in.

When you do this, you will see what the syntax is. For example, when searching for your post in tag you would use: user:29038 [calculus] https://math.stackexchange.com/search?q=user:29038+[calculus]

You could use this search to look for all my posts tagged . Modify the user and the tag as needed.