Perhaps you should try some spelling variations:
d functionalanalysis » d funktionalanalysis, v funktionalanalysis, 2 funktionalanalysis
_ functionalanalysis » v funktionalanalysis, functional analysis, der funktionalanalysis
b funktionalanalysis » v funktionalanalysis, uber funktionalanalysis, der funktionalanalysis
8 funktionalanalysis » v funktionalanalysis, der funktionalanalysis, die 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 (((b funktionalanalysis) OR (8 funktionalanalysis))))%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((d functionalanalysis) OR (_ functionalanalysis))) or (((b funktionalanalysis) or (8 funktionalanalysis))))%22".
• Adding a wildcard symbol may retrieve word variants: %((((d functionalanalysis) OR (_ functionalanalysis))) or (((b funktionalanalysis) or (8 funktionalanalysis))))%22*.