When searching for sources, use your keywords, avoid typing in whole sentences.
There is no one 'correct' search word to use. Different keywords give you more and different results. Think of words that mean the same or something similar as your topic and try those words, too.
Parents, Parenthood, Fatherhood, Motherhood, Families, Child Rearing, Parenting, etc.
You may need to broaden or narrow your search terms depending on your results :
Broader Search: gender instead of women
Narrower Search: housework instead of gender roles
Use an asterisk * to truncate words widening your search.
famil* will search for family, families and familial
Use quotation marks to keep phrases together: e.g. "Gender Roles"
LGBT Parents AND Adoption AND "United States"
Same-Sex Families AND Adopt* AND "United States"
LGBTQ+ AND Parents AND Adoption AND "United States"
Try your search terms in different combinations to get the greatest number of results.
Browse through the article and the abstract and keywords/subject headings. This will help you find additional keywords to search.