Research reports are generally written and published by organizations. They might be made available by the organization on its website, or they might also sell access/printed copies to libraries. They tend to cover very specific research projects that are local and relevant to what they do. For social services topics, these can be very useful.
Don't confuse these reports with research articles published in journals. Reports are more like a book, often hundreds of pages long. They could be physically on our library shelves, but they're more likely available online.
There's no one best place to search for these, but there are three good options: Library Catalogue, a database, and the web (Google).
Look for these as hints that it's a report, rather than a book:
Start by searching the Library Catalogue, using a keyword search. We've purchased many reports, in print and online.
If you know who wrote the report, include a word from the organization's name as a search term.
Otherwise, just search for your topic and look through the results for something that looks like a report.
Below is an example of a Library Catalogue description of a research report.
Many publications are available on the websites of the organizations that produce them.
A regular Google search could be very useful for finding these documents if they're on the web. Try something like: