Perhaps you should try some spelling variations:
integrating volume » integration volume, integrating value, integation volume
irrigation scheme » irrigation systems
canal irrigation » scale irrigation
supply canal » supply canada, supply annual, supply china
supply 6 » supply a, supply 3, supply 4

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply canal irrigation scheme. ) or ( ((supply 6) OR (supply _)) integrating volume. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply canal irrigation scheme. ) OR ( ((supply 6) OR (supply _)) integrating volume. ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply canal irrigation scheme. ) or ( ((supply 6) OR (supply _)) integrating volume. ))*".