Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
innovation theory » innovation through, motivation theory
life innovation » die innovation, eine innovation, lane innovation
supply life » supply lines
supply case » supply cost, supply curve, supply costs

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 case) OR (supply chain)) irrigation schemes. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply life innovation theory. ) OR ( ((supply case) OR (supply chain)) irrigation schemes. )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply life innovation theory. ) or ( ((supply case) OR (supply chain)) irrigation schemes. ))".
• Adding a wildcard symbol may retrieve word variants: (( supply life innovation theory. ) or ( ((supply case) OR (supply chain)) irrigation schemes. ))*.