Specific to the above example, in addition to @krssno’s space method, I think you can do:
"frank" -"frankfurt"
In my quick test just now, I could also keep adding negative terms, a la:
"frank" -"frankfurt" -"frankly" -"frankenstein"
Specific to the above example, in addition to @krssno’s space method, I think you can do:
"frank" -"frankfurt"
In my quick test just now, I could also keep adding negative terms, a la:
"frank" -"frankfurt" -"frankly" -"frankenstein"