Perhaps you should try some spelling variations:
integration theories » integration theory, integration through, integration efforts
crowd information » road information, crop information, how information
case integration » care integration, fare integration, can integration
supply crowd » supply growth, supply cost, supply how
supply case » supply cost, supply chain, supply curve
services. » series.

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

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