Several library databases have a way to filter search results for empirical methodologies. Try the techniques in bold in the following databases, in combination with other search terms for the topic you are researching.
It is also useful to search for the controlled vocabulary in the thesaurus or subject headings of the databases and use those terms and variants in searching. Look up a research method or search using terms like empirical, qualitative, quantitative, evaluation, correlation, intervention, or observation or browse by available categories. The Cochrane Library also has suggested Search strategies to identify observational studies in MEDLINE and Embase that can be used for other sources as well.
For databases and search engines without a methodology filter, such as Web of Science and Google Scholar, try (1) copying and pasting one or more of the types of studies listed for the Sociological Abstracts database or enter "study" to be broad with your search terms; and (2) include the operator AND (e.g. ("domestic violence" OR "intimate partner violence") AND study).
Left image: Methodology filter on the search form Right image: Methodology filter within Refine Results
Embase also has MEDLINE records.
In the results filters, look at Study types, and check the ones you want, such as controlled study, case report, retrospective study, cohort analysis, cross sectional study, systematic review, comparative study, prospective study, interview, longitudinal study, randomized controlled trial, observational study, meta analysis, qualitative research, semi structured interview, pilot study. Read also about General Study Types Hedges
In addition to Library Search and talking with Subject Librarians, use the library research guides (or LibGuides) and databases and resources listed on this page to search and identify journal articles, books, book chapters and other publications in Social Work and related fields.
https://libraryguides.mcgill.ca/knowledge-syntheses/search-tips