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