Perhaps you should try some spelling variations:
international efforts » international airports, international energy, international airport
crowd international » crop international, growth international, 3rd international
from immigration » from migration, from imitation, from integration
immigration some » migration some, immigration from, integration some
supply crowd » supply growth, supply cost

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply crowd international efforts. ) or ( supply from immigration some. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply crowd international efforts. ) OR ( supply from immigration some. )).
• Adding a wildcard symbol may retrieve word variants: (( supply crowd international efforts. ) or ( supply from immigration some. ))*.