Perhaps you should try some spelling variations:
integration theory » integration through, information theory, innovation theory
irrigation system » irrigation systems, irrigation water, irrigation scheme
supply scale » supply case, supply scheme, supply social
supply cost » supply costs
supply cote » supply costs, supply case, supply cold

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

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