Perhaps you should try some spelling variations:
"international pdr economic case" » "international port economic case", "international pour economic case", "international prtr economic case", "international pdr economics case", "international pdr economic cost", "international pdr economic crises", "international poor economic case", "international war economic case", "international 2 economic case"
"international bank economies prone" » "international bank economies from", "international bank economies jane", "international bank economies more", "international bank economists prone", "international bank economic prone", "international base economies prone"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("international bank economies prone") OR ("international pdr economic case"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"international bank economies prone\") OR (\"international pdr economic case\"))".
• Removing quotes may allow a broader search: (( international bank economies prone ) OR ( international pdr economic case )).
• Adding a wildcard symbol may retrieve word variants: (("international bank economies prone") OR ("international pdr economic case"))*.