How do I search by multiple tags?

I am able give files multiple tags, but I can't figure out a way to search by multiple tags. The current search syntax in Finder/Spotlight is to use the tag:<some_tag_name> query, however trying to search by multiple tags is not clear.

I have tried these options:

1. tag:<tag0>,<tag1>
2. tag:<tag0> <tag1>

For example, I have 3 files - foo, bar, baz - and 2 tags - alpha, beta. foo is tagged with alpha and beta, bar is tagged with only alpha, and baz is tagged with beta.

I have listed several scenarios which should underscore my objective:

1. A search of tag:alpha,beta should only return foo since it's the only file with both tags.
2. A search of tag:alpha should return foo and bar
3. A search of tag:beta should return foo and baz

This should be a simple feature included but I can't quite figure out how to use it.

As I finished writing my own question, I tried another combination, tag:<tag0> tag:<tag1>, and it worked! Seems like it's an implicit "AND" when you use it like this.

You can also apply boolean logic in Spotlight/Finder:

• tag:<tag1> OR tag:<tag2>
• tag:<tag3> AND <tag:4>
• NOT tag:<tag5>