Perhaps you should try some spelling variations:
scientific exploration » scientific explanation, scientific application, scientific collaboration
scientific computation » scientific communication, scientific computing
american voyages » american villages, aerial voyages, african voyagers

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 computation )).
• Adding a wildcard symbol may retrieve word variants: (( european and american voyages of scientific exploration ) or ( european and american voyages of scientific computation ))*.