Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
trade irrigation » pradesh irrigation, scale irrigation, grain irrigation
mega irrigation » delta irrigation, led irrigation, et irrigation
supply trade » supply case
supply mega » supply moral

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

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