Perhaps you should try some spelling variations:
great international » greater international, treaty international, area international
integration theory » integration through, information theory, innovation theory
price integration » service integration, trade integration, price indexation
support great » support greater, support create, support grant
export price » export prices, import prices

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

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