Perhaps you should try some spelling variations:
"oxford historical biogeography / oxford historical biogeography" » "oxford historical geography / oxford historical geography", "oxford pictorial biogeography / oxford pictorial biogeography", "foreword historical biogeography / foreword historical biogeography", "informed historical biogeography / informed historical biogeography"
"oxford historical ethnography / oxford historical ethnography" » "oxford historical geography / oxford historical geography", "oxford historical demography / oxford historical demography", "oxford historical cartography / oxford historical cartography", "oxford pictorial ethnography / oxford pictorial ethnography", "foreword historical ethnography / foreword historical ethnography", "informed historical ethnography / informed historical ethnography"

Try widening your search to All Fields.

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: (("oxford historical ethnography / oxford historical ethnography") OR ("oxford historical biogeography / oxford historical biogeography")).
• Removing quotes may allow a broader search: (( oxford historical ethnography / oxford historical ethnography ) or ( oxford historical biogeography / oxford historical biogeography )).
• Adding a wildcard symbol may retrieve word variants: (("oxford historical ethnography / oxford historical ethnography") or ("oxford historical biogeography / oxford historical biogeography"))*.