You can add keywords for the type of methodology to your search terms. If you have a particular research method in mind (e.g. survey, case study, etc.), you can include keywords to describe it in your search.
Start your search by entering keywords for your topic and then add a keyword for the methodology.
Example search in ERIC for reading comprehension, intervention, and qualitative research
Example search in OneSearch for: reading comprehension, intervention, and case study
ProQuest Education & Psychology Combined is a database that allows you to search for a specific type of methodology using the Methodology Filter.
Many databases allow you to search and limit by specific methodologies. Look for a Methodology Filter in the database using the Advanced Search page.