Perhaps you should try some spelling variations:
international host » international best, international postal, international hotel
international pdr » international port, international air, international ports
host economies » host economy, closed economies
economies were » economies more, economies have, economies face
economic case » economics case, economic cost, economic crises
pdr economic » poor economic, war economic, _ economic

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( international host economies were ) or ( international pdr economic case ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( international host economies were ) OR ( international pdr economic case )).
• Adding a wildcard symbol may retrieve word variants: (( international host economies were ) or ( international pdr economic case ))*.