Perhaps you should try some spelling variations:
information agent » information agents, information age, information about
data decision » a decision
david walker » david parker, dandy walker, david warren
agent data » patent data, event data, patient data
david wave » david wake, david weaver, david waite
david cake » david wake, david clarke, david casey

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: information agent data decision ((david wave) OR (((david cake) OR (david walker))))~.
• Adding a wildcard symbol may retrieve word variants: information agent data decision ((david wave) or (((david cake) or (david walker))))*.