Generally, different databases do not use the same subject phrase (e.g., "diversity in the workplace"; "workplace diversity"). But, you can use keywords in subject, abstract, and title fields when searching different sources. You can also combine these with other words (e.g., age differences, diversity and workplace; ethnic differences, female entrepreneurship, group identity, income inequality, wage inequality, women executives). This list is by no means comprehensive.
____ American (e.g., African American, Asian American, Japanese American, Mexican American, Native American, etc.)
Affirmative Action
African Americans
Age
Agency
American Indians
Anti-discrimination
Anti-racism; antiracism
Bias
Bigotry
BIPOC (Black, indigenous, People of Color)
Blacks
Boomers
Chicano
Counternarratives; counterstorytelling
Critical race theory; CRT
Cross-cultural (this is sometimes used in a domestic setting rather than an international one)
Cultural (this is sometimes used in a domestic setting rather than an international one)
Demography; demographic
Decolonize, decolonization
DEI
Disability; abilities (physical and mental)
Discrimination
Diversity
Elder (Elders, elderly)
Equal opportunity
Equality
Eskimo
Ethnic ; ethnicity
Ethnocentrism
Female
Feminine; feminist
Gender
Generation X
Generation Y
Glass ceiling
Hispanics
Homophobia
Income gap
Indigenous
Identity
Immigrants
Inclusion
Indian/s
indigenous
Inequality
Ingroups
Intersection/al
Latino
LGBT
Male
Marginalized
Masculinty
Microagression
Millennials
Minority
Multicultural, multiculturalism
Multigeneration/al
Native American tribes (e.g., Cherokee, Cheyenne)
Neurodiversity
Older
Oppression
Other/ing
Outgroups
Pluralism
Power
Political correctness
Prejudice/s
Race; racial; racism
Religion (or specific ones (e.g., Buddhism, Christianity, Islam, Judaism,)
Retirement age; retiree
Segregation
Seniors; Senior citizens
Sex
Sexual Harassment
Sexual orientation (or individual terms (e.g., bisexual, gay, lesbian)
Social justice
Stereotype
Storytelling
Token
Transformation/al
Transgender
Transgenerational
Underrepresented group
White fragility
White privilege
Whiteness
Women
Young adults