Perhaps you should try some spelling variations:
vertical integration » regional integration
integration theory » integration through, information theory, innovation theory
integration series » integration services, interaction series, integration server
support vertical » short vertical, support technical, support chemical
data integration » data integrity
export data » export day, import data

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

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