Perhaps you should try some spelling variations:
"foreword historical biogeography / foreword historical biogeography" » "foreword historical geography / foreword historical geography", "foreword historical demography / foreword historical demography"
"foreword editorial biogeography / foreword editorial biogeography" » "foreword editorial photography / foreword editorial photography", "foreword littoral biogeography / foreword littoral biogeography", "foreword ecological biogeography / foreword ecological biogeography"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"foreword historical biogeography / foreword historical biogeography\") OR (\"foreword editorial biogeography / foreword editorial biogeography\"))".
• Removing quotes may allow a broader search: (( foreword historical biogeography / foreword historical biogeography ) OR ( foreword editorial biogeography / foreword editorial biogeography )).
• Adding a wildcard symbol may retrieve word variants: (("foreword historical biogeography / foreword historical biogeography") OR ("foreword editorial biogeography / foreword editorial biogeography"))*.