Perhaps you should try some spelling variations:
d functionalanalysis » d funktionalanalysis, 8 funktionalanalysis, v funktionalanalysis
b funktionalanalysis » 8 funktionalanalysis, v funktionalanalysis, uber funktionalanalysis
_ functionalanalysis » 8 funktionalanalysis, v funktionalanalysis, functional analysis

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: %((d functionalanalysis) OR (((b funktionalanalysis) OR (_ functionalanalysis))))%22.
• Adding a wildcard symbol may retrieve word variants: %((d functionalanalysis) or (((b funktionalanalysis) or (_ functionalanalysis))))%22*.