Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
integration series » integrating services, integration schemes, integration social
crowd integration » grid integration, trade integration, chain integration
care integration » fare integration, can integration, market integration
supply crowd » supply growth, supply cost, supply how
export care » export share, export cargo, export base

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply crowd integration theories. ) OR ( export care integration series. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply crowd integration theories. ) or ( export care integration series. ))*.