Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
planning services » banking services
crowd integration » grid integration, trade integration, chain integration
wbi planning » trip planning, _ planning, use planning
supply crowd » supply growth, supply cost, supply how

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 wbi planning services. ) OR ( supply crowd integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply wbi planning services. ) or ( supply crowd integration theories. ))*.