advanced title search returns no results for "jack ryan" and "tom clancy"

This search yields 89 results

https://www.imdb.com/search/title/?characters=jack%20ryan

This search yields 120, with some same titles visible:

https://www.imdb.com/search/title/?role=nm0002007

Yet this yields no results:

https://www.imdb.com/search/title/?role=nm0002007&characters=jack%20ryan