Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
main international » joint international, bonn international, nations international
interaction series » interactions series, interaction studies, interaction terms
grant interaction » graph interaction, gradient interaction, plant interactions
supply main » supply chain, supply ann, supply many

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: (( supply main international efforts. ) OR ( support grant interaction series. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply main international efforts. ) or ( support grant interaction series. ))*.