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

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