Each of these topic examples link to either an online encyclopedia search, or a basic fUSIon search for related resources. To narrow down the search results in fUSIon, try adding more terms to the base topic (e.g. searching for Aleut storytelling instead of simply storytelling).
Once you have run a search, you can take advantage of the filters on the left side of the page to narrow down your results by categories such as format/source type, library location, publication year, and language.