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