This is not a comprehensive list. These are starting points for your research - don't rule out other non-social sciences databases! Social Work is multidisciplinary and so your search needs to encompass a variety of subject areas.
Search extensively indexed books, monographs, and conference papers. This index features citations with subject headings from a sociology-specific thesaurus designed by expert lexicographers. SocINDEX covers all subdisciplines of sociology such as anthropology, criminology, demography, ethnic, racial, and gender studies, marriage, family, and social structures, and social work.
Indexes psychology literature and related disciplines including psychiatry, medicine, nursing, pharmacology, cognitive science, and linguistics. Includes journals and book chapters. Use Historic PsycINFO to identify literature published as early as the 1920s. Links occur to full-text when available.
Google Site Search allows you to limit the results to a specific site or domain extension. Put "site:" in front of a site or domain extension to narrow the results. Don't forget to include your keywords or search terms before the "site:"!
site:.gov searches government websites
site:.edu searches educational websites
site:.org searches non-profit organizations
site:.com searches commercial websites
Example search: chronic illness site:.gov
Google Scholar works even better when you have it connected to your library. Set up your library link and get results that are available through the University Libraries.