Perhaps you should try some spelling variations:
"medical / operative medicine" » "medical / comparative medicine", "medical / operativen medizin", "medical / perioperative medicine"
"medical / narrative medicine" » "medical / integrative medicine", "medical / palliative medicine", "medical / alternative medicine"
"medical / operative medizin" » "medical / operativen medizin", "medical / alternative medizin", "medical / integrative medizin"

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: (("medical / regenerative medicine") OR ((((("medical / operative medicine") OR ("medical / narrative medicine"))) OR ("medical / operative medizin")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"medical / regenerative medicine\") or (((((\"medical / operative medicine\") OR (\"medical / narrative medicine\"))) or (\"medical / operative medizin\"))))".
• Removing quotes may allow a broader search: (( medical / regenerative medicine ) or ((((( medical / operative medicine ) OR ( medical / narrative medicine ))) or ( medical / operative medizin )))).
• Adding a wildcard symbol may retrieve word variants: (("medical / regenerative medicine") or ((((("medical / operative medicine") OR ("medical / narrative medicine"))) or ("medical / operative medizin"))))*.