Perhaps you should try some spelling variations:
grundlehren rider » grundlehren der, grundlehre der, grundlehren die
grundlehren des » grundlehren der, grundlagen des, grundlinien des
rider editions » modern editions, singer editions, other editions
des editions » les editions, best editions, des additions

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: (( grundlehren des editions ) OR ( grundlehren rider editions )).
• Adding a wildcard symbol may retrieve word variants: (( grundlehren des editions ) or ( grundlehren rider editions ))*.