Here: https://api.stackexchange.com/docs/advanced-search

It is reported that the tagged parameter in the request URL should work like this: "tagged - a semicolon delimited list of tags, of which at least one will be present on all returned questions."

But if I use a list of tags, only questions that include ALL of the listed tags are returned. For example, if I make a request for this URL: https://api.stackexchange.com/2.3/search/advanced?pagesize=100&order=desc&sort=activity&accepted=True&views=50&site=stackoverflow&tagged=java;javascript;python

the results returned are only 60, the questions that include ALL of the 3 tags, java, javascript and python.