Perhaps you should try some spelling variations:
"female migration studies." » "female education studies.", "female migrants studies.", "fedie migration studies.", "feclimate migration studies.", "fechange migration studies."
"male migration studies." » "die migration studies.", "climate migration studies.", "change migration studies."
"yale urban studies." » "age urban studies.", "game urban studies.", "safe urban studies."

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("male migration studies.") OR ("female migration studies."))) OR ("yale urban studies."))~.
• Removing quotes may allow a broader search: (((( male migration studies. ) or ( female migration studies. ))) or ( yale urban studies. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("male migration studies.") or ("female migration studies."))) or ("yale urban studies."))*.