Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
integration some » integration volume, integration power, integration south
grid integration » trade integration, _ integration, data integration
supply case » supply cost, supply chain, supply curve
supply grid » supply crowd, support grid
farm » firm, form

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

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