Perhaps you should try some spelling variations:
collaborative capital » collaborative capitalism, collaborative city, collaborative civil
collaborative social » collaborative goal, collaborative cell, collaborative city
wetlands digital » sweetland digital, methods digital, stand digital
digital theorien » digital stories, digital rhetoric, digital terrain

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: wetlands digital theorien ((collaborative social) OR (collaborative capital))~.
• Adding a wildcard symbol may retrieve word variants: wetlands digital theorien ((collaborative social) or (collaborative capital))*.