Try using the asterisk (*) within your keywords. Instead of using race, racism and racial, use rac* in the textbox. Primo will generate a list consisting of keywords beginning with the letters rac.
Other keywords to include, but not limited to are awareness, bias discrimination and minorities.
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After Race by 
The Emperor's New Clothes by 
Race and Racialization by 
Racism by 
Our Racist Heart? An Exploration of Unconscious Prejudice in Everyday Life by 
Encyclopedia of Race and Racism by 