Perhaps you should try some spelling variations:
integration series » integration services, interaction series, integration server
irrigation scheme » irrigation systems
canal irrigation » scale irrigation
supply canal » supply canada, supply annual, supply china
supply crowd » supply growth, supply cost

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 canal irrigation scheme. ) OR ( ((supply crowd) OR (supply from)) integration series. ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply canal irrigation scheme. ) or ( ((supply crowd) OR (supply from)) integration series. ))~".
• Adding a wildcard symbol may retrieve word variants: (( supply canal irrigation scheme. ) or ( ((supply crowd) OR (supply from)) integration series. ))*.