Perhaps you should try some spelling variations:
integration efforts » international efforts, conservation efforts
interaction series » interactions series, interaction studies, interaction terms
trade interaction » trade integration, face interaction, time interaction
agri integration » grid integration, der integration, iii integration
support agri » support grid, support aging, support a
import trade » export trade, import price, import taxes

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 agri integration efforts. ) OR ( import trade interaction series. ))~.
• Adding a wildcard symbol may retrieve word variants: (( support agri integration efforts. ) or ( import trade interaction series. ))*.