Perhaps you should try some spelling variations:
irrigation scheme » irrigation systems
holder irrigation » under irrigation, solar irrigation, smallholder irrigation
supply holder » supply role, supply under
how banking » home banking, new banking, shadow banking
how binding » how building, new binding

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 ((how banking) OR (how binding)) services. ) OR ( supply holder irrigation scheme. ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( supply ((how banking) OR (how binding)) services. ) or ( supply holder irrigation scheme. ))~".
• Adding a wildcard symbol may retrieve word variants: (( supply ((how banking) OR (how binding)) services. ) or ( supply holder irrigation scheme. ))*.