Perhaps you should try some spelling variations:
policies integration » policy integration, political integration, social integration
integration theories » integration theory, integration through, integration efforts
irrigation schemes » irrigation scheme, irrigation systems
syria irrigation » africa irrigation, drip irrigation, surface irrigation
support syria » support agri, support grid

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: (( support syria irrigation schemes. ) OR ( support policies integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (( support syria irrigation schemes. ) or ( support policies integration theories. ))*.