Perhaps you should try some spelling variations:
integration theories » integration theorems, integrationstheorie 2, integration theory
beyond integration » beyond negation, und integration, beyond mitigation
irrigation schemes » irrigation scheme, irrigation systems
furrow irrigation » farm irrigation, crop irrigation, flood irrigation
supply beyond » supply second, supply demand
supply furrow » supply from

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 beyond integration theories. ) OR ( supply furrow irrigation schemes. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply beyond integration theories. ) or ( supply furrow irrigation schemes. ))*.