Perhaps you should try some spelling variations:
information professionals » information processing, information protection, information processes
information professional » information processing, formacion profesional, introduction professional

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "channels ((information professional) OR (information professionals)) series".
• Adding a wildcard symbol may retrieve word variants: channels ((information professional) OR (information professionals)) series*.