Perhaps you should try some spelling variations:
"european and african voyagers of scientific collaboration" » "european and african voyagers of scientific communication", "european and african voyagers of scientific explanation", "european and african voyagers of scientific computation", "european and african managers of scientific collaboration", "european and african teenagers of scientific collaboration", "european and african voices of scientific collaboration"
"european and american voyages of scientific exploration" » "european and american voyages of scientific explanation", "european and american voyages of scientific application", "european and american voyages of scientific expeditions", "european and american villages of scientific exploration", "european and aerial voyages of scientific exploration", "european and american images of scientific exploration"
"european and american voyages of scientific information" » "european and american villages of scientific information", "european and aerial voyages of scientific information", "european and american images of scientific information"

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: (((("european and american voyages of scientific exploration") OR ("european and american voyages of scientific information"))) OR ("european and african voyagers of scientific collaboration")).
• Removing quotes may allow a broader search: (((( european and american voyages of scientific exploration ) or ( european and american voyages of scientific information ))) or ( european and african voyagers of scientific collaboration )).
• Adding a wildcard symbol may retrieve word variants: (((("european and american voyages of scientific exploration") or ("european and american voyages of scientific information"))) or ("european and african voyagers of scientific collaboration"))*.