On the search results page, look for relevant titles in your search results. In the screenshots below, I searched for "refugees mental health."
If you need current information, you can limit your results by year. Just click on Publication Date, type in the years you want to search, and click Refine.
After you've done that, review the list to see what looks relevant to your topic.
If you can't tell if the book is relevant to your topic, click on the title and look for a table of contents.
For example, I'm not sure the third result - Global mental health: Anthropological perspectives - is relevant, so I clicked on it.
Not all books list a table of contents, but this one does, toward the bottom. Tip: The chapters are separated by "--".
It looks like there is at least one chapter in this book might be useful – the one titled "Life in transit: mental health, temporality and urban displacement for Iraqi refugees."
If you've found a good book - even if it's older - click on the title. There are two things on the book's details page that might be helpful:
Let's use our example from above - Amidst peril and pain: the mental health and well-being of the world's refugees. Here is the list of subjects associated with that book:
You can click on any of those subjects - like Refugees -- Mental health services - to find more results with that subject.
If you scroll down further, you'll see the Virtual Browse option. It shows you what books are next to this book on the shelf. Since books are shelved according to subject, you might find some related books. For example, The Blue Room: Trauma and Testimony... might be relevant to our topic too (though unfortunately, it's also pretty old).