Perhaps you should try some spelling variations:
integration theory » integration through, information theory, innovation theory
internet services » internet service
fare integration » trade integration, die integration
grid internet » good internet, freie internet, world internet
support fare » support farm, support farmers, support future
support grid » support agri, support grant, support group

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( support fare integration theory. ) or ( support grid internet services. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support fare integration theory. ) OR ( support grid internet services. )).
• Adding a wildcard symbol may retrieve word variants: (( support fare integration theory. ) or ( support grid internet services. ))*.