Perhaps you should try some spelling variations:
"world pictorial photographs / world pictorial photographs" » "world historical photographs / world historical photographs", "world editorial photography / world editorial photography", "world historical photographic / world historical photographic", "worlds pictorial photographs / worlds pictorial photographs", "works pictorial photographs / works pictorial photographs", "food pictorial photographs / food pictorial photographs"
"oxford historical demography / oxford historical demography" » "oxford historical geography / oxford historical geography", "oxford historical biogeography / oxford historical biogeography", "oxford pictorial demography / oxford pictorial demography", "foreword historical demography / foreword historical demography", "informed historical demography / informed historical demography"
"oxford physical geography / oxford physical geography" » "oxford poetical geography / oxford poetical geography", "foreword physical geography / foreword physical geography"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("oxford physical geography / oxford physical geography") OR ("oxford historical demography / oxford historical demography"))) OR ("world pictorial photographs / world pictorial photographs")).
• Removing quotes may allow a broader search: (((( oxford physical geography / oxford physical geography ) or ( oxford historical demography / oxford historical demography ))) or ( world pictorial photographs / world pictorial photographs )).
• Adding a wildcard symbol may retrieve word variants: (((("oxford physical geography / oxford physical geography") or ("oxford historical demography / oxford historical demography"))) or ("world pictorial photographs / world pictorial photographs"))*.