Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
relations efforts » relations export, reclamation efforts, reduction efforts
grid integration » trade integration, _ integration, data integration
supply trade » supply side
supply case » supply cost, supply chain, supply curve
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 trade) OR (supply case)) relations efforts. ) or ( supply grid integration theories. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((supply trade) OR (supply case)) relations efforts. ) OR ( supply grid integration theories. )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((supply trade) OR (supply case)) relations efforts. ) or ( supply grid integration theories. ))".
• Adding a wildcard symbol may retrieve word variants: (( ((supply trade) OR (supply case)) relations efforts. ) or ( supply grid integration theories. ))*.