If you're wanting to research emerging adulthood, Social Services Abstracts is a great resource to use (linked to the right).
When developing your search strategy, it is helpful to brainstorm variations or synonyms of the key concepts you're researching. For example, based on the suggestions from your syllabus, if you are researching foster youth who reach the age of majority in foster care, you might try different combinations of the following search terms:
social support OR transitions
ageing OR adulthood
You might choose more programs, such as housing or healthcare.
Remember, research is a process! If you need any help, feel free to email me at firstname.lastname@example.org!