Perhaps you should try some spelling variations:
irrigation schemes » irrigation scheme, irrigation systems
asset information » asset formation, market information, sheet information
syria irrigation » africa irrigation, drip irrigation, surface irrigation
supply syria » supply social
supply asset » supply assets, supply aspect, supply market

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

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