Perhaps you should try some spelling variations:
integration series » integration theories, integrating services, integration schemes
agri conservation » bird conservation, aid conservation, area conservation
price integration » service integration, policy integration, trade integration
support agri » support grid, support a
import price » import prices, export price, export prices

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( support agri conservation efforts. ) or ( import price integration series. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support agri conservation efforts. ) OR ( import price integration series. )).
• Adding a wildcard symbol may retrieve word variants: (( support agri conservation efforts. ) or ( import price integration series. ))*.