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

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