Limiting searches by publication:
1. Type the name of the publication within quotation marks in the search box, along with the other search operators,
i.e., "Black Music Research Journal" ragtime
The results will include documents published in this journal, as well as articles, books, etc. where this journal is mentioned (i.e., in the "References" or "Works Cited" portion).
2. Publication-restricted searches may be incomplete. Google Scholar gathers bibliographical data from many sources, including automatically extracting it from text and citations. This information may be incomplete or even incorrect; many preprints, for instance, don't say where (or even whether) the article was ultimately published.
In general, publication-restricted searches are effective if you're certain of what you're looking for, but they‘re often narrower than you might expect.
You might find that a search across all publications for [mutual funds] gives more useful results than a more specific search for "funds" only in the Journal of Finance.
3. One journal can be spelled several ways (e.g., Journal of Biological Chemistry is often abbreviated as J Biol Chem), so you may need to try several spellings of a given publication in order to get complete search results.