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:&lt;some_tag_name&gt; query, however trying to search by multiple tags is not clear.
I have tried these options:

tag:&lt;tag0&gt;,&lt;tag1&gt;
tag:&lt;tag0&gt; &lt;tag1&gt;

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:

A search of tag:alpha,beta should only return foo since it's the only file with both tags.
A search of tag:alpha should return foo and bar
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:&lt;tag0&gt; tag:&lt;tag1&gt;, and it worked! Seems like it's an implicit &quot;AND&quot; when you use it like this.
You can also apply boolean logic in Spotlight/Finder:

tag:&lt;tag1&gt; OR tag:&lt;tag2&gt;
tag:&lt;tag3&gt; AND &lt;tag:4&gt;
NOT tag:&lt;tag5&gt;