Perhaps you should try some spelling variations:
collaborative studies » collaboration studies, collaborative series, collaborative study
collaborative social » collaborative goal, collaborative capital, collaborative cell
digital rhetoric » digital record, digital theorien, visual rhetoric
stand digital » state digital, second digital, uganda digital

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: stand digital rhetoric ((collaborative studies) OR (collaborative social))~.
• Adding a wildcard symbol may retrieve word variants: stand digital rhetoric ((collaborative studies) or (collaborative social))*.