Perhaps you should try some spelling variations:
innovation theory » innovation through, motivation theory
life innovation » die innovation, eine innovation, lane innovation
cost irrigation » crop irrigation, cost mitigation, et irrigation
supply life » supply lines
supply cost » supply costs
systems. » system.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply life innovation theory. ) or ( supply cost irrigation systems. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply life innovation theory. ) OR ( supply cost irrigation systems. )).
• Adding a wildcard symbol may retrieve word variants: (( supply life innovation theory. ) or ( supply cost irrigation systems. ))*.