Perhaps you should try some spelling variations:
channels information » channel information, channel formation, change information
professional stories » professional studies, professional sports, professional bodies
professional series » professional services, professional server, professional selves

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: channels information ((professional series) OR (professional stories)).
• Adding a wildcard symbol may retrieve word variants: channels information ((professional series) or (professional stories))*.