Perhaps you should try some spelling variations:
"heterodoxe okonomik" » "heterodoxen okonomik"
"heterodox economic" » "heterodox economics", "heterodoxen okonomik"
"heterodox economy" » "heterodox economics", "orthodox economy"

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: (("heterodox economy") OR ((("heterodox economic") OR ("heterodoxe okonomik")))).
• Removing quotes may allow a broader search: (( heterodox economy ) or ((( heterodox economic ) or ( heterodoxe okonomik )))).
• Adding a wildcard symbol may retrieve word variants: (("heterodox economy") or ((("heterodox economic") or ("heterodoxe okonomik"))))*.