Perhaps you should try some spelling variations:
"das symposium series" » "das symposium semi", "das symposium sas", "das symposium sss", "bacus symposium series", "texas symposium series", "lakes symposium series"
"das symposion series" » "das composition series", "das symposion veranst", "das symposion der"
"das symposia series" » "a symposia series", "iag symposia series", "rims symposia series"

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: (("das symposium series") OR ((("das symposion series") OR ("das symposia series")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"das symposium series\") or (((\"das symposion series\") OR (\"das symposia series\"))))".
• Removing quotes may allow a broader search: (( das symposium series ) or ((( das symposion series ) OR ( das symposia series )))).
• Adding a wildcard symbol may retrieve word variants: (("das symposium series") or ((("das symposion series") OR ("das symposia series"))))*.