Perhaps you should try some spelling variations:
integration theories » integration theory, integration efforts, integration reforms
integration through » innovation through
grid integration » _ integration, data integration
export trade » export share, export taxes, export price
supply grid » supply crowd, support grid

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

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